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                                                                    EXHIBIT 2.2 


                             SUPPLEMENTAL AGREEMENT

     THIS SUPPLEMENTAL AGREEMENT (this "Agreement") is made as of March 11,
1999, between OAK HILL FINANCIAL, INC., an Ohio corporation ("Oak Hill
Financial"), and TOWNE FINANCIAL CORPORATION, an Ohio corporation ("Towne
Financial").


                                    RECITALS

     A. Oak Hill Financial, Inc. is a registered bank holding company under the
Bank Holding Company Act of 1956, as amended. Oak Hill Banks ("Oak Hill Banks"),
a banking corporation chartered under the law of Ohio, is a wholly owned
subsidiary of Oak Hill Financial.

     B. Towne Financial is an Ohio corporation. Blue Ash Building & Loan Company
("Blue Ash"), a building and loan association chartered under the law of Ohio,
is a wholly owned subsidiary of Towne Financial.

     C. Concurrently with the execution and delivery of this Agreement, Oak Hill
Financial and Towne Financial are entering into an Agreement and Plan of Merger
(the "Merger Agreement"), which provides for the merger of Towne Financial into
Oak Hill Financial in accordance with the terms and conditions contained in the
Merger Agreement and in this Agreement (the "Merger").

     D. The parties hereto desire to enter into this Agreement for the purpose
of setting forth certain representations, warranties, and covenants made by each
party as an inducement to the other parties to execute and deliver the Merger
Agreement and to consummate the Merger and to set forth certain additional terms
and conditions applicable to the Merger.

     E. The Merger is intended to be a tax-free merger of Town Financial with
and into Oak Hill Financial pursuant to section 368(a)(1)(A) of the Internal
Revenue Code of 1986, as amended.


                                    AGREEMENT

     In consideration of the foregoing and of the mutual promises contained
herein, the parties agree as follows:

SECTION 1. DEFINITIONS

     1.01  DEFINITIONS CONTAINED ELSEWHERE IN THIS AGREEMENT. For the purposes
of this Agreement, the following terms shall have the meanings assigned to them
in the preamble and Recitals of this Agreement:

           (a) this "Agreement";

           (b) "Towne Financial";

           (c) "Oak Hill Banks";

           (d) "Oak Hill Financial";

           (e) the "Merger"; and

           (f) the "Merger Agreement".
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     1.02  DEFINITIONS CONTAINED IN THE MERGER AGREEMENT. For the purposes of
this Agreement, the following terms shall have the meanings assigned to them in
the Merger Agreement:

           (a) the "Effective Date";

           (b) the "Effective Time";

           (c) the "Exchange Agent";

           (d) the "Dissenters' Rights Law";

           (e) "Towne Financial Common";

           (f) "Dissenting Share"; and

           (g) "Oak Hill Financial Common".

     1.03  OTHER DEFINITIONS. For the purposes of this Agreement, certain other
terms shall be defined as follows:

           (a) the "Accord" means the Legal Opinion Accord of the American Bar
Association Section of Business Law (1991);

           (b) an "Acquisition Proposal" means an inquiry received from, or an
offer or proposal made by or on behalf of, any other corporation, firm,
association, person, or other entity relating to (i) the possible acquisition of
more than 25 percent of the shares of the capital stock of Towne Financial,
including, but not limited to, an exchange or tender offer therefor, (ii) the
possible acquisition of a majority of the assets of Towne Financial, (iii) a
merger or consolidation involving Towne Financial, other than a transaction in
which Towne Financial will be the owner of all of the stock of the surviving
corporation following the transaction, or (iv) a merger or consolidation
involving Towne Financial, other than a transaction in which Towne Financial
will be the surviving corporation and the current shareholders of Towne
Financial will be the owners of a majority of the stock of the surviving
corporation following the transaction;

           (c) an "Affiliate" of a party means a director, officer, employee,
agent, or adviser of such party;

           (d) the "Audited Financial Statements" mean the consolidated
financial statements of Towne Financial, consisting of balance sheets as of June
30, 1998, and statements of income, cash flows, and changes in shareholder's
equity for the fiscal years ended June 30, 1998, with the report thereon of
Grant Thornton LLP, certified public accountants;

           (e) "Average Closing Price" shall mean the average of the daily
average of the closing bid and asked prices of Oak Hill Financial Common as
reported on the Nasdaq National Market System (as reported in a mutually agreed
upon authoritative source) for the twenty most recent full trading days in which
such shares are traded on the Nasdaq National Market System ending at the
closing of trading on the date three trading days prior to the Closing Date.

           (f) "CERCLA" means the Comprehensive Environmental Response,
Compensation and Liability Act of 1980, as amended;

           (g) the "Code" means the Internal Revenue Code of 1986;

           (h) "CRA" means the Community Reinvestment Act of 1977, as amended;



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           (i) "Confidential Information" of or relating to a party means any
and all information received from or on behalf of such party or their Affiliates
concerning the Merger, the terms of this Agreement or the Merger Agreement, or
the assets, business, operations, or financial condition of such party or their
Affiliates, unless and to the extent that any such information is in the public
domain;

           (j) the "Division of Financial Institutions " means the Division of
Financial Institutions, Ohio Department of Commerce;

           (k) "Employee Benefit Plans" means any and all "employee benefit
plans" or "welfare benefit plans" as defined in ERISA;

           (l) "ERISA" means the Employee Retirement Income Security Act of
1974, as amended;

           (m) "Environmental Law" means CERCLA, the Resource Conservation and
Recovery Act, the Hazardous Materials Transportation Act, the Toxic Substances
Control Act, the Federal Water Pollution Control Act, the Clean Water Act, the
Clean Air Act, regulations promulgated thereunder, and any other federal, state,
county, municipal, local, foreign, provincial, or other statute, law, ordinance,
or regulation which may relate to or deal with human health or the environment,
all as may be amended from time to time;

           (n) "FDIC" means the Federal Deposit Insurance Corporation;

           (o) the "Federal Reserve Board" means the Board of Governors of the
Federal Reserve System, or its delegate;

           (p) "Hazardous Substances" means (i) any "hazardous substance" as
defined in Section 101(14) of CERCLA or regulations promulgated thereunder;
(ii) any "solid waste," "hazardous waste," or "infectious waste," as such terms
are defined in any other Environmental Law; (iii) asbestos, urea-formaldehyde,
polychlorinated biphenyls (PCBs), nuclear fuel or material, chemical waste,
radioactive material, explosives, known carcinogens, petroleum products and
by-products, and other dangerous, toxic, or hazardous pollutants, contaminants,
chemicals, materials, or substances listed or identified in, or regulated by,
any Environmental Law; and (iv) any other substances or materials which are
classified or considered to be hazardous or toxic under any Environmental Law;

           (q) the "1934 Act" means the Securities Exchange Act of 1934, as
amended;

           (r) the "1933 Act" means the Securities Act of 1933, as amended;

           (s) "Knowledge" as used herein shall mean those facts that are known
or should reasonably have been known after due inquiry by the President, or any
Senior or Executive Vice President of any party hereto;

           (t) the "Oak Hill Disclosure Memorandum" means a certain Disclosure
Memorandum, which is to be delivered by Oak Hill Financial to Towne Financial
within forty-five (45) days after the date of this Agreement, as the same has
been amended and supplemented through the date of this Agreement, and as the
same may subsequently be amended prior to the Effective Date;

           (u) "Oak Hill Financial Stock Option Plan" means the Oak Hill
Financial 1995 Stock Option Plan as presently existing or hereafter amended;

           (v) a "Principal Shareholder" of a party means a person who owns five
percent or more of the outstanding shares of any class of the capital stock of
such party;

           (w) the "Real Property" means any and all real property owned or
leased by Towne Financial or Blue Ash, as appropriate, as of the date of this
Agreement or acquired at any time after the date of this Agreement and prior to
the Effective Time, together with any and all improvements thereon;

           (x) the "Registration Statement" means the registration statement on
the appropriate form filed or to be filed by Oak Hill Financial with the SEC
under the provisions of the 1933 Act for the purpose of registering



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the shares of Oak Hill Financial Common to be issued by Oak Hill Financial
pursuant to the terms of the Merger Agreement, including, but not limited to,
the prospectus and proxy statement to be included therein as a part thereof;

           (y) "SAIF" means the Savings Association Insurance Fund of the FDIC;

           (z) the "SEC" means the Securities and Exchange Commission;

           (aa) "Starting Date" shall mean the date of this Agreement;

           (bb) "Starting Price" shall mean the average of the daily average of
bid and asked closing prices of Oak Hill Financial Common as reported on the
Nasdaq National Market System (as reported in a mutually agreed upon
authoritative source) for the twenty most recent full trading days in which such
shares are traded on the Nasdaq National Market System ending on the day before
the Starting Date;

           (cc) "Tax" or "Taxes shall mean any federal, state, county, local, or
foreign income, profits, franchise, gross receipts, payroll, sales, employment,
use, property, withholding, excise, occupancy, and other taxes assessments,
charges, fares, or impositions, including interest, penalties, and additions
imposed thereon or with respect thereto.

           (dd) the "Towne Disclosure Memorandum" means a certain Disclosure
Memorandum, to be delivered by Towne Financial to Oak Hill Financial within
forty-five (45) days after the date of this Agreement, as the same has been
amended and supplemented through the date of this Agreement, and as the same may
subsequently be amended prior to the Effective Date; and

           (ee) an "Unsolicited Acquisition Proposal" means a written
Acquisition Proposal that is received by Towne Financial or made public by or on
behalf of the proponent of such Acquisition Proposal without any solicitation of
such proposal by any director, officer, employee, agent, or other person acting
on behalf of Towne Financial.

SECTION 2. REPRESENTATIONS AND WARRANTIES OF TOWNE FINANCIAL

     Towne Financial represents and warrants to Oak Hill Financial that, except
as set forth in the Towne Disclosure Memorandum:

     2.01  ORGANIZATION AND AUTHORITY. Towne Financial is a unitary savings and
loan holding company duly organized, validly existing, and in good standing
under the laws of the State of Ohio, is duly qualified to do business and is in
good standing in all jurisdictions where its ownership or leasing of property or
the conduct of its business requires it to be so qualified, and has the
corporate power and authority to own its properties and assets, to carry on its
business as it is presently being conducted, and, subject to the approval of its
shareholders, and to the filing of all requisite regulatory applications and
notices and the receipt of all requisite regulatory approvals, to enter into and
carry out its obligations under this Agreement and under the Merger Agreement.

     2.02  CAPITALIZATION. The authorized capital stock of Towne Financial
consists of 2,250,000 shares of Towne Financial Common, of which 222,100 shares
were issued and outstanding as of the date of this Agreement. All of the
outstanding shares of Towne Financial Common are duly and validly authorized,
issued, and outstanding and are fully paid and nonassessable. There are no
existing options, warrants, or commitments of any kind which might require the
issuance by Towne Financial of any additional shares of Towne Financial Common
or other equity securities of Towne Financial, except, the Warrants, the Towne
1997 Stock Option Plan and the Towne 1992 Stock Option Plan. The Disclosure
Memorandum includes a true and correct copy of each of Towne's Stock Option
Plans and a list of all option holders under such plans, the number of shares
subject to options held by each, the exercise price or prices of such options,
and the dates each option was granted, becomes exercisable, and terminates.

     2.03  SUBSIDIARIES. The Towne Disclosure Memorandum lists all corporations
in which Towne Financial owns, directly or indirectly, five percent or more of
any class of capital stock as of the date of this Agreement, and indicates, with
respect to the equity securities of each such corporation as of such date, the
number of shares of each class authorized, the number of shares outstanding, and
the number of shares owned or controlled directly or



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indirectly by Towne Financial. Towne Financial owns all of the capital stock of
Blue Ash. Other than Blue Ash, Towne Financial does not own, directly or
indirectly, more than fifty percent (50%) of the capital stock of any other
corporation. Other than the Warrants, the Towne 1997 Stock Option Plan and the
Towne 1992 Stock Option Plan, there are no options, contracts, commitments,
understandings, or arrangements by which Towne Financial is bound to issue
additional shares of its equity securities. All of the shares of the capital
stock of Blue Ash held by Towne Financial are duly and validly authorized,
issued, and outstanding, fully paid and nonassessable, and owned by Towne
Financial free and clear of any claim, lien, encumbrance, or agreement with
respect thereto. Blue Ash is a state building and loan association duly
organized, validly existing, and in good standing under the laws of Ohio, is
duly qualified to do business and is in good standing in all jurisdictions where
its ownership or leasing of property or the conduct of its business requires it
to so qualified, and has the corporate power and authority, as well as any and
all necessary governmental authorization to own its properties and assets and to
carry on its business as it is presently being conducted. Blue Ash is a member
of the Federal Home Loan Bank System and its deposits are insured up to the
applicable limits by the SAIF.

     2.04  DIRECTORS, OFFICERS, AND PRINCIPAL SHAREHOLDERS. The Towne Disclosure
Memorandum contains a true and complete list of all directors, executive
officers, and Principal Shareholders of Towne Financial and Blue Ash.

     2.05  AUTHORIZATION. The execution, delivery, and performance of this
Agreement and the Merger Agreement by Towne Financial, and the consummation of
the transactions contemplated hereby and thereby have been duly approved by the
Board of Directors of Towne Financial, subject to the adoption of the Merger
Agreement and this Agreement by the shareholders of Towne Financial; and subject
to the adoption of the Merger Agreement and this Agreement by the shareholders
of Oak Hill Financial, and subject to applicable regulatory approvals for both
Oak Hill Financial and Towne Financial, and the expiration of waiting periods,
if any.

     2.06  ABSENCE OF DEFAULTS. Neither the execution and delivery of this
Agreement or the Merger Agreement, nor the consummation of the Merger, nor
compliance by Towne Financial with any provisions hereof or thereof will
conflict with or result in a breach of any provisions of the articles or
certificate of incorporation, regulations, bylaws, or other charter documents of
Towne Financial or Blue Ash or result in a material breach or termination of, or
accelerate the performance required by, any note, bond, mortgage, lease,
agreement, or other instrument to which Towne Financial or Blue Ash is a party
or by which Towne Financial or Blue Ash may be bound.

     2.07  FINANCIAL STATEMENTS. Towne Financial has delivered the Audited
Financial Statements to Oak Hill Financial. The Audited Financial Statements
fairly present the financial position, results of operations, and cash flows of
Towne Financial at the dates shown and for the periods indicated in conformity
with generally accepted accounting principles applied on a consistent basis.
There are no obligations or liabilities, whether absolute, accrued, or
contingent (including, without limiting the generality of the foregoing,
liabilities for taxes), of Towne Financial or Blue Ash which are required in
conformity with generally accepted accounting principles to be reflected or
disclosed in the Audited Financial Statements which have not been or will not be
so reflected or disclosed.

     2.08  TITLE TO PROPERTIES.

           (a) The Towne Disclosure Memorandum sets forth a complete and correct
list of all of the Real Property. Towne Financial or Blue Ash have good and
marketable title to all of the Real Property listed as owned by it in the Towne
Disclosure Memorandum and valid leasehold interests in all of the Real Property
listed as leased by it in the Towne Disclosure Memorandum, free and clear of any
liens and encumbrances except taxes and assessments not delinquent and utility
and other easements that do not interfere with the use of the property for the
business being conducted thereon. The Real Property and the present use thereof
do not violate any local zoning or similar land use laws, any governmental
regulations, or any restrictive covenants. To the Knowledge of Towne Financial
or Blue Ash, after reasonable investigation, (i) the Real Property and the use
thereof by Towne Financial or Blue Ash do not encroach upon any property owned
by any other person, and (ii) no property owned by any other person encroaches
upon any of the Real Property.

           (b) Complete and correct copies of all deeds and leases relating to
the Real Property are included in the Towne Disclosure Memorandum.



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           (c) Each item of the personal property owned by Towne Financial or
Blue Ash, including without limitation all contractual rights and assets
reflected in the Audited Financial Statements or acquired after December 31,
1998 (except for assets sold or otherwise disposed of in the ordinary course of
business since such date or assets which, either individually or in the
aggregate, are not material to the operations or financial condition of Towne
Financial or Blue Ash), is owned by Towne Financial or Blue Ash, free and clear
of any lien or encumbrance, except for assets securing loans from the Federal
Home Loan Bank of Cincinnati and assets pledged for public deposits, if any.

     2.09  ABSENCE OF UNDISCLOSED LIABILITIES. Except to the extent reflected or
reserved against on the Audited Financial Statements, Towne Financial and Blue
Ash have no liabilities, whether absolute, accrued, contingent, or otherwise,
due or to become due, including without limitation any liabilities as guarantor
under any guaranty or liabilities for taxes, except liabilities and taxes
incurred in the ordinary course of business, which have had or will have a
material adverse effect on the business, financial condition, or results of
operations of Towne Financial or Blue Ash.

     2.10  ABSENCE OF CERTAIN CHANGES. Since December 31, 1998, neither Towne
Financial nor Blue Ash has:

           (a) made or permitted to be made any changes in its capital or
corporate structure, certificate or articles of incorporation, regulations,
bylaws, or other charter documents;

           (b) merged with any other corporation or bank, or permitted any other
corporation or bank to merge into or consolidate with either of them; acquired
control over any other firm, bank, corporation, or organization; or created any
subsidiaries;

           (c) issued, sold, delivered, or agreed to issue, sell, or deliver any
additional shares of its capital stock or any options, warrants, or rights to
acquire any such capital stock, or securities convertible into or exchangeable
for such capital stock, except for capital stock issued pursuant to the exercise
of stock options previously issued, in accordance with their respective terms;

           (d) purchased, sold, transferred, or otherwise acquired or disposed
of, or agreed to purchase, sell, transfer, acquire, or dispose of, any capital
stock or other securities of any kind, or options or other rights to acquire any
such securities, of any other entity (including, but not limited to, any such
transactions involving Towne Financial or Blue Ash with respect to the capital
stock or other securities), other than in the ordinary course of business;

           (e) incurred any indebtedness, obligations, or liabilities, whether
absolute, accrued, contingent, or otherwise, including, without limitation,
liabilities as guarantor under any guaranty, other than indebtedness,
obligations, and liabilities incurred in the ordinary course of its business or
incurred under the contracts and commitments referred to in Section 2.18 hereof;

           (f) issued as borrower any promissory notes, guarantees, or other
evidences of indebtedness, other than in the ordinary course of business;

           (g) forgiven or cancelled any indebtedness or contractual obligation,
other than in the ordinary course of business;

           (h) mortgaged, pledged, or subjected to any lien or lease any of its
assets, tangible or intangible, or permitted or suffered any such asset to be
subjected to any lien or lease, other than in the ordinary course of business;

           (i) purchased, sold, transferred, liquidated, or otherwise acquired
or disposed of any assets or properties, or entered into any contract for any
such purchase, sale, transfer, liquidation, acquisition, or disposition, other
than in the ordinary course of business;



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           (j) entered into any lease of real or personal property, other than
in the ordinary course of business;

           (k) declared, paid, made, or set apart any sum or property for, any
dividend or other distribution, or otherwise paid or transferred any funds or
property to its shareholders, except for a dividend plan as follows: $.12 per
share, record date March 12, 1999, payable March 30, 1999;

           (l) increased the wages, salaries, compensation, pension or other
fringe benefits, or perquisites payable to any executive officer by more than
approximately five percent of the amount thereof in effect as of December 31,
1998, or granted any severance or termination pay, or entered into any contract
to make or grant any severance or termination pay, or entered into any
employment or consulting contract which is not terminable by Towne Financial or
Blue Ash, without cause and without penalty, upon notice of 30 days or less;

           (m) made any loans or loan commitments, other than in the ordinary
course of business, to any director, officer, or Principal Shareholder (or any
person or business entity controlled by or affiliated with such director,
officer, or Principal Shareholder);

           (n) modified, altered, amended, terminated, or withdrawn from
participation in any Employee Benefit Plan or any other plan or benefit provided
to one or more employees, or paid or distributed any sum from any such plan
except to participants in the ordinary course of the operation of the plan, or
made any payment or contribution to any such plan except as required by the
terms of such plan or consistent with past practices, but, in any event, not to
exceed eight percent (8%) of eligible salaries, in the aggregate, on an annual
basis. For the purpose of this section the distribution immediately prior to the
Closing of bonuses accrued during calendar year 1999 shall be considered to be
in the ordinary course of operation of the bonus plan, provided such accruals
shall have been made in accordance with terms of the plan and the prior practice
of Towne Financial and Blue Ash;

           (o) entered into any transaction involving the expenditure of more
than $50,000, other than in the ordinary course of business, except pursuant to
and in accordance with the terms of the contracts and commitments referred to in
Section 2.18 hereof;

           (p) adopted any change in any accounting policy or method;

           (q) revalued any asset or adjusted any reserve other than in the
ordinary course of business;

           (r) failed to keep in full force and effect insurance and bonds at
least equal in amount and scope of coverage to the insurance and bonds carried
on December 31, 1998;

           (s) suffered any material adverse change in its business, financial
condition, income, assets, or liabilities;

           (t) suffered any damage, destruction, or loss (whether or not covered
by insurance) which has had a material adverse effect, in any case or in the
aggregate, on its business, financial condition, operations, projects,
properties, or assets;

           (u) suffered any strike, work stoppage, slow-down, or other labor
disturbance; or

           (v) suffered any loss of employees or customers which has had a
material adverse effect on its business, operations, or prospects.

     2.11  TAXES. Towne Financial and Blue Ash have filed or caused to be filed
all federal and other Tax returns which are required to be filed and have paid
or made provision for payment of all Taxes shown as due on such returns. No
deficiencies for any Tax, assessment, or governmental charge have been proposed,
asserted, or assessed against Towne Financial or Blue Ash that have not been
settled and paid. The Tax returns of Towne Financial or Blue Ash have not been
examined by the Internal Revenue Service for any of the six years preceding the
date of this Agreement and the statute of limitations has not been extended for
any Tax year.



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     2.12  LABOR MATTERS. Neither Towne Financial nor Blue Ash is a party to any
collective bargaining or other union agreement with any of its employees, or is
involved in any labor dispute.

     2.13  LITIGATION. There is no action, suit, proceeding, or claim by any
governmental agency or other person or entity nor any investigation by any
governmental agency pending or, to the Knowledge of Towne Financial or Blue Ash,
threatened against (i) Towne Financial or Blue Ash, (ii) the assets, business,
or goodwill of Towne Financial or Blue Ash, or (iii) any director, officer, or
Principal Shareholder of Towne Financial, in relation to the business of Towne
Financial or Blue Ash or any such person's capacity as a director, officer, or
Principal Shareholder of Towne Financial or Blue Ash. Neither Towne Financial
nor Blue Ash knows of no basis or grounds for any such action, suit, proceeding,
claim, or investigation. Neither Towne Financial nor Blue Ash is subject to any
supervisory agreement, consent order or decree, cease and desist order, or other
restriction on the business or assets of Towne Financial or Blue Ash.

     2.14  ENVIRONMENTAL MATTERS.

           (a) To the Knowledge of Towne Financial or Blue Ash, Towne Financial
and Blue Ash are and have been at all times in substantial compliance with all
applicable Environmental Laws and neither Towne Financial nor Blue Ash have
engaged in any activity resulting in a material violation of any applicable
Environmental Law. No orders, hearings, actions, or other proceedings by or
before any court or governmental agency in which Towne Financial or Blue Ash is
a party are pending or, to the Knowledge of Towne Financial or Blue Ash,
threatened in connection with any alleged violation of any applicable
Environmental Law (i) by Towne Financial or Blue Ash or (ii) in relation to any
part of the Real Property and neither Towne Financial nor Blue Ash has Knowledge
of any investigations or inquiries with respect to any such alleged violation.
No claims have been made or, to the Knowledge of Towne Financial or Blue Ash,
threatened at any time by any third party against Towne Financial or Blue Ash
relating to damage, contribution, cost recovery, compensation, loss, or injury
resulting from any Hazardous Substance. To the Knowledge of Towne Financial or
Blue Ash, neither Towne Financial nor Blue Ash has caused or permitted any
Hazardous Substance to be integrated into the Real Property or any component
thereof in such manner or quantity as may reasonably be expected to or in fact
would pose a threat to human health or the value of the Real Property. None of
the Real Property has been used by Towne Financial or Blue Ash for the storage
or disposal of Hazardous Substances nor to the Knowledge of Towne Financial or
Blue Ash, is any of the Real Property contaminated by any Hazardous Substance.
To the Knowledge of Towne Financial or Blue Ash, none of the Real Property has
in the past contained or presently contains any underground storage tanks. To
the Knowledge of Towne Financial or Blue Ash, neither Towne Financial nor Blue
Ash has interest, direct or indirect, in any property owned by a third party
which has been contaminated by Hazardous Substances (excluding any property as
to which the sole interest of Towne Financial or Blue Ash is that of a lien
holder or mortgagee, but including any property as to which title has been taken
by Towne Financial or Blue Ash pursuant to mortgage foreclosure or similar
proceeding and any property as to which Towne Financial or Blue Ash has
participated in the financial management to a degree sufficient to influence the
property's treatment of Hazardous Substances).

           (b) To the Knowledge of Towne Financial or Blue Ash, the
representations set forth in paragraph (a) above are also true and correct in
relation to any and all real property owned or leased by it at any time prior to
the date of this Agreement, together with any improvements located thereon.

     2.15  COMMUNITY REINVESTMENT ACT COMPLIANCE. Towne Financial and Blue Ash
are in compliance with the applicable provisions of the CRA and the regulations
promulgated thereunder, and has received a CRA rating of satisfactory or better
from the Office of Thrift Supervision. Towne Financial and Blue Ash know of no
fact or circumstance or set of facts or circumstances which would cause them to
fail to comply with such provisions or to cause the CRA rating of Blue Ash to
fall below satisfactory.

     2.16  COMPLIANCE WITH LAWS. Towne Financial and Blue Ash hold all permits,
licenses, certificates of authority, orders, and approvals of, and have made all
filings, applications, and registrations with, all governmental or regulatory
bodies that are required in order to permit them to carry on their respective
businesses as they are presently conducted. To the Knowledge of Towne Financial
and Blue Ash, Towne Financial and Blue Ash have conducted its businesses so as
to comply in all material respects with all applicable statutes, regulations,
rules, and orders.



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     2.17  INFORMATION PROVIDED BY TOWNE FINANCIAL AND BLUE ASH. None of the
information supplied or to be supplied by Towne Financial and Blue Ash for
inclusion in the Registration Statement, the application for approval, or any
other document to be filed with the Federal Reserve Board, the Division of
Financial Institutions, the SEC, or any other federal or state regulatory
authority in connection with the transactions contemplated herein or in the
Merger Agreement is or will be false or misleading with respect to any material
fact, or omits or will omit any material fact necessary in order to make the
statements therein not misleading.

     2.18  MATERIAL CONTRACTS.

           (a) The Towne Disclosure Memorandum contains a complete and correct
list of all written or oral agreements, leases, and other obligations and
commitments of the following types, to which either Towne Financial or Blue Ash
is a party, by which Towne Financial or Blue Ash or any of their property is
bound, or which has been authorized by either Towne Financial or Blue Ash:

               (i) promissory notes, guaranties, mortgages, security agreements,
     or other evidences of indebtedness of Towne Financial or Blue Ash;

               (ii) partnership or joint venture agreements;

               (iii) employment, bonus, compensation, severance, or consulting
     agreements;

               (iv) collective bargaining agreements;

               (v) Employee Benefit Plans and any other plans, benefits,
     programs of benefits, or deferred compensation arrangements for the benefit
     of directors, employees, or former or retired employees;

               (vi) agreements or commitments for sale (other than in the
     ordinary course of business) of assets exceeding $50,000 in the aggregate;

               (vii) agreements or commitments for capital expenditures in
     excess of $50,000 in the aggregate;

               (viii) agreements or other documents creating liens or security
     interests relating to any real or personal property owned, rented, or
     leased by Towne Financial or Blue Ash and used in connection with the
     business of such entity;

               (ix) leases of, commitments to lease, and other agreements
     relating to the lease or rental of, real or personal property by Towne
     Financial or Blue Ash and used in connection with the business of such
     entity;

               (x) all policies of insurance and fidelity bonds of Towne
     Financial or Blue Ash;

               (xi) all direct or indirect loans or guaranties of loans to any
     director, officer, or Principal Shareholder of Towne Financial or Blue Ash
     or their spouses or children or any partnership, corporation, or other
     entity in which any such director, officer, or Principal Shareholder or
     their spouses or children, have a significant (ten percent or more)
     interest; and

               (xii) all other contracts and commitments not made in the
     ordinary course of business.

           (b) The Towne Disclosure Memorandum includes complete and correct
copies of all written agreements, leases and commitments, except loan
commitments less than $500,000, together with all amendments thereto, listed in
the Towne Disclosure Memorandum and a complete and correct written description
of all oral agreements listed in the Towne Disclosure Memorandum.



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<PAGE>   10

           (c) As of and through the date of this Agreement: (i) each agreement,
lease, and commitment of Towne Financial or Blue Ash is valid and subsisting and
in full force and effect in all material respects; (ii) Towne Financial and Blue
Ash have in all material respects performed all obligations required to be
performed by it to date under such agreements, leases, and commitments; and
(iii) no event or condition exists which constitutes or, after notice or lapse
of time, would constitute, a material default on the part of Towne Financial or
Blue Ash under any agreement, lease, or commitment.

     2.19  EMPLOYEE BENEFIT PLANS.

           (a) All Employee Benefit Plans maintained by Towne Financial or Blue
Ash comply in all material respects with the requirements of ERISA and the Code
and all such plans have been administered to date in compliance with the
requirements of ERISA, the Code, and subsequent legislation regulating ERISA
plans. Each of such plans that is an employee pension benefit plan within the
meaning of Section 3(2) of ERISA that is intended to be a qualified plan under
Section 401(a) of the Code has been amended to comply in all material respects
with current law as required or the remedial amendment period for such amendment
under Section 401(b) of the Code has not expired and Towne Financial or Blue Ash
has obtained favorable determination letters with respect to all such plans. As
of the date hereof, neither Towne Financial nor Blue Ash has liability on
account of any accumulated funding deficiency (as defined in Section 412 of the
Code) or on account of any failure to make contributions to or pay benefits
under any such plan nor is Towne Financial or Blue Ash aware of any claim
pending or threatened to be brought by any party regarding such matters. No
prohibited transaction has occurred with respect to any such plan that would
result, directly or indirectly, in the imposition of any excise tax under
Section 4975 of the Code; nor has any reportable event under Section 4043 of
ERISA occurred with respect to any such plan. Neither Towne Financial nor Blue
Ash has a defendant in any lawsuit or criminal action concerning such entity's
conduct as a fiduciary, party-in-interest, or disqualified person with respect
to any plan, nor is either of them engaged in litigation or a continuing
controversy with, or, to the knowledge of Towne Financial or Blue Ash, under
investigation or examination by, the Department of Labor, Internal Revenue
Service, Justice Department, or Pension Benefit Guaranty Corporation involving
compliance with ERISA or the provisions of the Code relating to employee benefit
plans. All reporting and disclosure requirements of ERISA and the Code have been
met in all respects by all such plans. Neither Towne Financial nor Blue Ash is
required to contribute to an Employee Benefit Plan that is a "multiemployer
plan" within the meaning of Section 3(37) of ERISA.

           (b) The Towne Disclosure Memorandum lists all Employee Benefit Plans
and any and all other benefit plans or programs currently in effect for
employees, former employees, and retired employees of Towne Financial or Blue
Ash including, without limitation, those providing any form of medical, health,
and dental insurance, severance pay and benefits continuation, relocation
assistance, vacation pay, tuition aid, and matching gifts for charitable
contributions to educational or cultural institutions, whether or not subject to
ERISA. The Towne Disclosure Memorandum includes complete and correct copies of
all such plans or programs, including each trust or other agreement under which
any trustee or custodian holds funds or property of the plan and all current
financial and actuarial reports, all current reporting and disclosure documents
and filings, and currently effective Internal Revenue Service rulings or
determination letters in respect thereof. If any of the Employee Benefit Plans
listed in the Towne Disclosure Memorandum has not been amended to comply with
the Tax Reform Act of 1986 and subsequent legislation, Towne Financial will also
deliver to Oak Hill Financial information and documentation regarding such
plan's operation during the remedial amendment period which is sufficient to
enable Oak Hill Financial to amend such plans to comply with the Tax Reform Act
of 1986 and subsequent legislation.

     2.20  INSURANCE POLICIES. The Towne Disclosure Memorandum contains a
complete and correct list of the insurance policies and fidelity bonds currently
maintained by Towne Financial or Blue Ash. The Towne Disclosure Memorandum
includes complete and correct copies of all such policies and bonds currently in
effect together with all riders and amendments thereto. All premiums due thereon
have been paid and Towne Financial or Blue Ash has complied in all respects with
the provisions of such policies and bonds. Neither Towne Financial nor Blue Ash
has failed to give any notice or present any claim under any insurance policy or
fidelity bond in due and timely fashion.

     2.21  CAPITAL REQUIREMENTS. Towne Financial and Blue Ash are in compliance
with all currently applicable capital requirements and guidelines prescribed by
all appropriate federal regulatory agencies.



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<PAGE>   11

     2.22  LOAN LOSS RESERVES. Since December 31, 1998, neither Towne Financial
nor Blue Ash has incurred any unusual or extraordinary loan losses. The
allowance for loan losses reflected on the financial statements of Towne
Financial or Blue Ash has been determined in accordance with generally accepted
accounting principles and in accordance with all applicable regulations of all
appropriate regulatory agencies and is adequate in all material respects under
requirements of GAAP to provide for reasonably anticipated losses on outstanding
loans. Neither Towne Financial nor Blue Ash has Knowledge of any potential
losses that have not been considered in establishing the current allowance for
loan losses.

     2.23  BROKERS; CERTAIN FEES. Neither Towne Financial nor Blue Ash, nor any
of their respective officers, directors, or employees, has employed any broker
or finder or incurred any liability for any financial advisory fees, brokerage
fees, commissions, or finder's fees in connection with this Agreement or the
Merger Agreement, or the transactions contemplated herein or therein.

     2.24  MATERIAL FACTS. Neither this Agreement, the Merger Agreement, the
Towne Disclosure Memorandum, nor any list, schedule, or certificate furnished to
Oak Hill Financial by or on behalf of Towne Financial or Blue Ash contains any
untrue statement of a material fact or omits a material fact necessary in order
to make the statements contained therein not misleading in light of the
circumstances in which made.

     2.25  TAX TREATMENT OF THE MERGER. Neither Towne Financial or Blue Ash, or
any Affiliate thereof, has taken any action or has any Knowledge of any fact or
circumstance that is reasonably likely to prevent the transactions contemplated
hereby, including the Merger, from qualifying as a reorganization within the
meaning of Section 368(a) of the Internal Revenue Code.

SECTION 3. REPRESENTATIONS AND WARRANTIES OF OAK HILL FINANCIAL

     Oak Hill Financial and Oak Hill Banks represent and warrant, as the case
may be, to Towne Financial that, except as set forth in the Oak Hill Disclosure
Memorandum:

     3.01  ORGANIZATION AND AUTHORITY OF OAK HILL FINANCIAL. Oak Hill Financial
is a corporation duly organized, validly existing, and in good standing under
the laws of the State of Ohio, is duly qualified to do business and is in good
standing in all jurisdictions where its ownership or leasing of property or the
conduct of its business requires it to be so qualified, and has the corporate
power and authority to own its properties and assets, to carry on its business
as it is presently being conducted, and to enter into and carry out its
obligations under this Agreement.

     3.02  CAPITALIZATION. The authorized capital stock of Oak Hill Financial
consists of (i) 5,000,000 shares of common stock, without par value, of which
4,367,765 shares were issued and outstanding as of December 31, 1998 (including
treasury shares) and 200,000 reserved for issuance upon exercise of existing
stock option, and (ii) 1,500,000 voting shares of preferred stock, without par
value, and 1,500,000 non-voting shares of preferred stock, without par value, of
which there are no shares issued and outstanding as of the date hereof. All the
outstanding shares of Oak Hill Financial Common are duly and validly authorized,
issued, and outstanding and are fully paid and nonassessable. All of the shares
of Oak Hill Financial Common to be issued pursuant to the Merger Agreement will,
when so issued, be duly and validly authorized, issued, and outstanding, fully
paid and nonassessable, and the issuance of such shares will not be subject to
any preemptive or similar rights. The deposits of Oak Hill Banks are insured up
to the applicable limits by the Bank Insurance Fund ("BIF").

     3.03  AUTHORIZATION OF OAK HILL FINANCIAL. The execution, delivery, and
performance of this Agreement by Oak Hill Financial, and the consummation of the
transactions contemplated hereby, have been duly approved by the Board of
Directors of Oak Hill Financial. As soon as practicable and, in any event,
within ten (10) business days after the SEC has declared the Registration
Statement effective, Oak Hill Financial will call and mail notice of a meeting
of its shareholders for the purpose of adopting the Merger Agreement and this
Agreement, which meeting shall be held not more than 45 days from the date the
notice is mailed, and the Board of Directors of Oak Hill Financial will
recommend to the shareholders that they vote their shares in favor of the
Merger.

     3.04  ABSENCE OF DEFAULTS. Neither the execution and delivery of this
Agreement, nor the consummation of the Merger, nor compliance by Oak Hill
Financial with any of the provisions hereof will conflict with or result in a
breach of any provision of the charter or bylaws of Oak Hill Financial or result
in a material breach or



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<PAGE>   12

termination of, or accelerate the performance required by, any material note,
bond, mortgage, lease, agreement, or other instrument to which Oak Hill
Financial is a party or to which Oak Hill Financial may be bound.

     3.05  INFORMATION PROVIDED BY OAK HILL FINANCIAL. None of the information
supplied or to be supplied by Oak Hill Financial for inclusion in the
Registration Statement, application for approval, or any other document to be
filed with the Federal Reserve Board, the Division of Financial Institutions,
the SEC, or any other federal or state regulatory authority in connection with
the transactions contemplated herein or in the Merger Agreement is or will be
false or misleading with respect to any material fact, or omits or will omit any
material fact necessary in order to make the statements therein not misleading.

     3.06  MATERIAL FACTS. Neither this Agreement nor the Merger Agreement
contains any untrue statement of a material fact or omits a material fact
necessary in order to make the statements contained therein not misleading in
light of the circumstances in which made; provided, however, that the scope of
this representation does not extend to any information relating to or furnished
by Towne Financial or Blue Ash.

     3.07  FILING OF REPORTS. Oak Hill Financial Common is registered pursuant
to Section 12 of the 1934 Act. Oak Hill Financial has been subject to the
reporting requirements of Section 13 of the 1934 Act for a period of at least
90 days prior to the date hereof and has filed all reports required to be filed
thereunder during the twelve months preceding the date hereof. Since January 1,
1996, Oak Hill Financial has filed with the SEC all documents and reports
(including all amendments, exhibits, and schedules thereto and documents
incorporated by reference therein) required to be filed by Oak Hill Financial
under the 1934 Act and the 1933 Act, and the rules and regulations promulgated
by the SEC thereunder. None of such documents or reports, as of their respective
dates and as amended through the date hereof, contained any untrue statement of
a material fact or omitted to state a material fact required to be stated
therein or necessary to make the statements therein, in view of the
circumstances under which they were made, not misleading.

     3.08  ABSENCE OF UNDISCLOSED LIABILITIES. Except to the extent reflected or
reserved against on the Oak Hill Disclosure Memorandum, Oak Hill Banks has no
liabilities, whether absolute, accrued, contingent, or otherwise, due or to
become due, including without limitation any liabilities as guarantor under any
guaranty or liabilities for taxes, except liabilities and taxes incurred in the
ordinary course of business, which have had or will have a material adverse
effect on the business, financial condition, or results of operations of Oak
Hill Banks.

     3.09  ABSENCE OF CERTAIN CHANGES. Except as provided in the Oak Hill
Disclosure Memorandum, since December 31, 1998, Oak Hill Financial has not:

           (a) made or permitted to be made any changes in their capital or
corporate structures, certificates or articles of incorporation, regulations,
bylaws, or other charter documents;

           (b) merged with any other corporation or bank, or permitted any other
corporation or bank to merge into or consolidate with either of them; acquired
control over any other firm, bank, corporation, or organization; or created any
subsidiaries;

           (c) issued, sold, delivered, or agreed to issue, sell, or deliver any
additional shares of their capital stock or any options, warrants, or rights to
acquire any such capital stock, or securities convertible into or exchangeable
for such capital stock, and except for capital stock issued pursuant to the
exercise of stock options previously issued, in accordance with their respective
terms;

           (d) purchased, sold, transferred, or otherwise acquired or disposed
of, or agreed to purchase, sell, transfer, acquire, or dispose of, any capital
stock or other securities of any kind, or options or other rights to acquire any
such securities, of any other entity (including, but not limited to, any such
transactions involving either of Oak Hill Banks or Oak Hill Financial with
respect to the capital stock or other securities of the other of them), other
than in the ordinary course of business;

           (e) incurred any indebtedness, obligations, or liabilities, whether
absolute, accrued, contingent, or otherwise, including, without limitation,
liabilities as guarantor under any guaranty, other than indebtedness,
obligations, and liabilities incurred in the ordinary course of their business;



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<PAGE>   13

           (f) adopted any change in any accounting policy or method;

           (g) revalued any asset or adjusted any reserve, other than in the
ordinary course of business;

           (h) failed to keep in full force and effect insurance and bonds at
least equal in amount and scope of coverage to the insurance and bonds carried
on December 31, 1998;

           (i) suffered any material adverse change in their business, financial
condition, income, assets, or liabilities; and

           (j) made no material increase in dividends until the Effective Date
of this Agreement.

     3.10  TAXES. Oak Hill Financial has filed or caused to be filed all federal
and other tax returns which are required to be filed and have paid or made
provision for payment of all taxes shown as due on such returns. No deficiencies
for any tax, assessment, or governmental charge have been proposed, asserted, or
assessed against Oak Hill Financial that have not been settled and paid.

     3.11  LITIGATION. There is no action, suit, proceeding, or claims by any
governmental agency or other person or entity nor any investigation by any
governmental agency pending or, to the Knowledge of Oak Hill Financial,
threatened against (i) Oak Hill Banks, (ii) Oak Hill Financial, (iii) the
assets, business or goodwill of Oak Hill Banks or Oak Hill Financial, or (iv)
any director, officer, or Principal Shareholder of Oak Hill Banks or Oak Hill
Financial, in relation to the business of Oak Hill Banks or Oak Hill Financial
or any such person's capacity as a director, officer, or Principal Shareholder
of Oak Hill Banks or Oak Hill Financial.

     3.12  COMPLIANCE WITH LAWS. To the knowledge of Oak Hill Financial, Oak
Hill Banks and Oak Hill Financial hold all permits, licenses, certificates of
authority, orders, and approvals of, and have made all filings, applications,
and registrations with, all governmental or regulatory bodies that are required
in order to permit them to carry on their respective businesses as they are
presently conducted. To the Knowledge of Oak Hill Financial, Oak Hill Banks and
Oak Hill Financial have conducted their businesses so as to comply in all
material respects with all applicable statutes, regulations, rules, and orders.

     3.13  ENVIRONMENTAL MATTERS.

           (a) To the Knowledge of Oak Hill Financial, Oak Hill Banks is and has
been at all times in substantial compliance with all applicable Environmental,
and Oak Hill Banks has not engaged in any activity resulting in a material
violation of any applicable Environmental Law. No orders, hearings, actions, or
other proceedings by or before any court or governmental agency in which Oak
Hill Banks is a party are pending or, to the Knowledge of Oak Hill Financial,
threatened in connection with any alleged violation of any applicable
Environmental Law (i) by Oak Hill Banks or (ii) in relation to any part of the
Real Property, and Oak Hill Financial has no Knowledge of any investigations or
inquiries with respect to any such alleged violation. No claims have been made
or, to the Knowledge of Oak Hill Financial, threatened at any time by any third
party against Oak Hill Banks relating to damage, contribution, cost recovery,
compensation, loss, or injury resulting from any Hazardous Substance. To the
Knowledge of Oak Hill Financial, Oak Hill Banks has not caused or permitted any
Hazardous Substance to be integrated into the Real Property or any component
thereof in such manner or quantity as may reasonably be expected to or in fact
would pose a threat to human health or the value of the Real Property. None of
the Real Property has been used by Oak Hill Banks for the storage or disposal of
Hazardous Substances nor to the Knowledge of Oak Hill Financial, is any of the
Real Property contaminated by any Hazardous Substance. To the Knowledge of Oak
Hill Financial, none of the Real Property has in the past contained or presently
contains any underground storage tanks. To the Knowledge of Oak Hill Financial,
Oak Hill Banks has no interest, direct or indirect, in any property owned by a
third party which has been contaminated by Hazardous Substances (excluding any
property as to which the sole interest of Oak Hill Banks is that of a lien
holder or mortgagee, but including any property as to which title has been taken
by Oak Hill Banks pursuant to mortgage foreclosure or similar proceeding and any
property as to which Oak Hill Banks has participated in the financial management
to a degree sufficient to influence the property's treatment of Hazardous
Substances).



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           (b) To the Knowledge of Oak Hill Financial, the representations set
forth in paragraph (a) above are also true and correct in relation to any and
all real property owned or leased by it at any time prior to the date of this
Agreement, together with any improvements located thereon.

     3.14  EMPLOYEE BENEFIT PLANS. All Employee Benefit Plans maintained by Oak
Hill Banks or Oak Hill Financial comply in all material respects with the
requirements of ERISA and the Code and all such plans have been administered to
date in compliance with the requirements of ERISA, the Code, and subsequent
legislation regulating ERISA plans. Each of such plans that is an employee
pension benefit plan within the meaning of Section 3(2) of ERISA that is
intended to be a qualified plan under Section 401(a) of the Code has been
amended to comply in all material respects with current law as required or the
remedial amendment period for such amendment under Section 401(b) of the Code
has not expired and Oak Hill Banks or Oak Hill Financial has obtained favorable
determination letters with respect to all such plans. As of the date hereof, Oak
Hill Banks or Oak Hill Financial has no liability on account of any accumulated
funding deficiency (as defined in Section 412 of the Code) or on account of any
failure to make contributions to or pay benefits under any such plan nor is Oak
Hill Banks or Oak Hill Financial aware of any claim pending or threatened to be
brought by any party regarding such matters. No prohibited transaction has
occurred with respect to any such plan that would result, directly or
indirectly, in the imposition of any excise tax under Section 4975 of the Code;
nor has any reportable event under Section 4043 of ERISA occurred with respect
to any such plan. Neither Oak Hill Banks nor Oak Hill Financial is a defendant
in any lawsuit or criminal action concerning such entity's conduct as a
fiduciary, party-in-interest, or disqualified person with respect to any plan,
nor is either of them engaged in litigation or a continuing controversy with,
or, to the Knowledge of Oak Hill Financial, under investigation or examination
by, the Department of Labor, Internal Revenue Service, Justice Department, or
Pension Benefit Guaranty Corporation involving compliance with ERISA or the
provisions of the Code relating to employee benefit plans. All reporting and
disclosure requirements of ERISA and the Code have been met in all respects by
all such plans. Neither Oak Hill Banks nor Oak Hill Financial is required to
contribute to an Employee Benefit Plan that is a "multiemployer plan" within the
meaning of Section 3(37) of ERISA.

     3.15  CAPITAL REQUIREMENTS. Oak Hill Financial is in compliance with all
currently applicable capital requirements and guidelines prescribed by all
appropriate federal regulatory agencies.

     3.16  TAX TREATMENT OF THE MERGER. Oak Hill Financial has not taken any
action or has any knowledge of any fact or circumstance that is reasonably
likely to prevent the transactions contemplated hereby, including the Merger,
from qualifying as a reorganization within the meaning of Section 368(a) of the
Internal Revenue Code.

SECTION 4. COVENANTS OF TOWNE FINANCIAL AND BLUE ASH.

     Towne Financial and Blue Ash covenant and agree as follows:

     4.01  APPLICATIONS FOR REGULATORY APPROVALS; REGISTRATION STATEMENT. Towne
Financial and Blue Ash will cooperate, and will cause its respective directors,
officers, employees, agents, and advisers to cooperate, to the extent reasonably
necessary, with Oak Hill Financial and its advisers in connection with the
preparation of the Registration Statement and the applications for regulatory
approvals described in Section 5.02 hereof.

     4.02  SHAREHOLDERS' MEETING. As soon as practicable and, in any event,
within ten business days after the SEC has declared the Registration Statement
effective, Towne Financial will call and mail notice of a meeting of its
shareholders for the purpose of adopting the Merger Agreement and this
Agreement, which meeting shall be held not more than 45 days from the date the
notice is mailed, and the Board of Directors of Towne Financial will to the
extent consistent with their fiduciary duty recommend to the shareholders that
they vote their shares in favor of the Merger.

     4.03  CONDUCT OF BUSINESS. From the date of this Agreement until the
Effective Time, except as provided herein or as consented to by Oak Hill
Financial in writing, Towne Financial and Blue Ash will conduct their respective
operations only, and shall not take any action except, in the ordinary and usual
course of business, and Towne Financial and Blue Ash will use its best efforts
to preserve intact its business organization, assets, prospects, and business
relationships, to keep available the services of their officers and employees,
and to maintain existing



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<PAGE>   15

relationships with other entities. Without limiting the generality of the
foregoing, subject to the exceptions stated above, during such period, Towne
Financial and Blue Ash will not except as provided herein:

           (a) enter into any agreement or commitment of the character referred
to in subsections 2.18(a)(i) through (xii) hereof; or

           (b) take or permit to be taken any action of a character which is
listed in subsections (a) through (q) of Section 2.10 hereof; provided, however,
that, after prior consultation with Oak Hill Financial, Towne Financial may take
or permit such of those actions as may be required pursuant to any change in
applicable accounting rules or standards, or by law or any applicable rules or
regulations of any governmental authority.

     4.04  ACCESS TO INFORMATION. Towne Financial and Blue Ash shall give
representatives of Oak Hill Financial full access, during normal business hours
and upon reasonable notice, to all assets, properties, books, records,
agreements, and commitments of Towne Financial and Blue Ash, provided that such
access shall not unreasonably interfere with the operations of Towne Financial
and Blue Ash, and shall furnish to representatives of Oak Hill Financial all
such information concerning its and their affairs as Oak Hill Financial may
reasonably request. It is expressly understood that no investigation by Oak Hill
Financial pursuant to this Section 4.04 or otherwise shall affect any
representation or warranty made herein.

     4.05  PRESS RELEASES. Towne Financial and Blue Ash shall consult in advance
with Oak Hill Financial as to the form and substance of any press release,
written communication with its shareholders, or other public disclosure of
matters related to the Merger Agreement, this Agreement, or the Merger, and
shall not issue any such press release, written communication, or public
disclosure without the prior written consent of Oak Hill Financial; provided,
however, that nothing contained herein shall prohibit Towne Financial and Blue
Ash from making any disclosure (after consultation with Oak Hill Financial with
respect thereto) which its counsel deems necessary under applicable law.

     4.06  BEST EFFORTS. Towne Financial and Blue Ash shall use their best
efforts to take or cause to be taken all actions necessary, proper, or advisable
to consummate the Merger, including such actions as Oak Hill Financial may
reasonably request in writing, and should Oak Hill Financial so elect, to
consummate a merger of Blue Ash into an interim state-chartered commercial bank
formed by Oak Hill Financial for such purpose.

     4.07  ACQUISITION PROPOSALS. Unless and until this Agreement shall have
been terminated by either party pursuant to Section 11 hereof, Towne Financial
and Blue Ash shall not (i) directly or indirectly, through any of its officers,
directors, agents, or affiliates, solicit, encourage, initiate, entertain,
consider, or participate in any negotiations or discussions with respect to any
Acquisition Proposal, or (ii) disclose any information not customarily disclosed
to any person or entity or provide access to its properties, books, or records
or otherwise assist or encourage any person or entity in connection with any
Acquisition Proposal; provided, however, that Towne Financial shall be entitled
to entertain, consider, and participate in negotiations and discussions
regarding an Unsolicited Acquisition Proposal, and to disclose such information
and provide such access in connection with such an Unsolicited Acquisition
Proposal, to the extent that the Board of Directors of Towne Financial
determines in good faith, after consultation with its financial advisor with
respect to the financial aspects of the Unsolicited Acquisition Proposal and the
Merger, and with legal counsel to Towne Financial, that failure to so consider
or participate in such negotiations or discussions would be inconsistent with
the fiduciary obligations of the directors of Towne Financial to the
shareholders of Towne Financial. Towne Financial shall give Oak Hill Financial
immediate notice of any such Acquisition Proposals.

     4.08  ADVICE OF CHANGES. Between the date hereof and the Effective Date,
Towne Financial and Blue Ash shall advise Oak Hill Financial promptly, in
writing, of any material fact which, if existing or known on the date hereof,
would have been required to be set forth or disclosed in or pursuant to this
Agreement and any fact which, if existing or known on the date hereof, would
have made any of the representations contained herein untrue. Prior to the
Effective Date, Towne Financial and Blue Ash shall deliver to Oak Hill Financial
a supplement to the Towne Disclosure Memorandum, which shall contain a
description of any and all such matters.

     4.09  CONFIDENTIALITY. From and after the date of this Agreement, Towne
Financial and Blue Ash shall, and shall cause its respective Affiliates to,
treat all Confidential Information of Oak Hill Financial and Oak Hill



15
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Banks, as confidential, and Towne Financial and Blue Ash shall, and shall cause
its respective Affiliates to, not use any such Confidential Information for any
purpose except in furtherance of the transactions contemplated hereby. In the
event this Agreement is terminated pursuant to Section 11 hereof, Towne
Financial and Blue Ash shall, and shall cause their respective Affiliates to,
promptly return to Oak Hill Financial all documents and workpapers, and all
copies thereof, containing any such Confidential Information of Oak Hill
Financial or Oak Hill Banks. The covenants of Towne Financial and Blue Ash
contained in this Section 4.09 are of the essence and shall survive any
termination of this Agreement and the closing of the transactions contemplated
hereby.

     4.10  COORDINATION OF DIVIDENDS. Towne Financial agrees to cooperate with
Oak Hill Financial to ensure that the shareholders of Towne Financial receive a
regular quarterly dividend from either Towne Financial or Oak Hill Financial
during the quarter in which the Effective Date occurs, but that they do not
receive dividends from both Towne Financial and Oak Hill Financial during such
quarter.

     4.11  TAX REPRESENTATIONS. Towne Financial and Blue Ash will use reasonable
efforts to cause the Merger, and will take no action which would cause the
Merger not to qualify for treatment as a "reorganization" within the meaning of
Section 368(a) of the Internal Revenue Code for federal income tax purposes and
shall make such Tax representations as shall be reasonably requested of them.

     4.12  POOLING. The accounting firm of Grant Thornton LLP has reviewed the
proposed Merger and determined that the Merger qualifies as a "pooling of
interest" for accounting purposes. Neither Towne Financial nor Blue Ash shall
intentionally take or cause to be taken any action, whether before or after the
Effective Date, which would disqualify the Merger as a "pooling of interests"
for accounting purposes or as a "reorganization" within the meaning of Section
368(a) of the Code.

     4.13  FORM 13D OR 13G FILINGS. Towne Financial shall promptly advise Oak
Hill Financial of the filing of a Form 13D or 13G under the 1934 Act with
respect to Towne Financial Common and shall provide Oak Hill Financial with a
copy of any such Form 13D or 13G promptly after receipt thereof.

SECTION 5. COVENANTS OF OAK HILL FINANCIAL AND OAK HILL BANKS

     Oak Hill Financial and Oak Hill Banks covenant and agree as follows:

     5.01  ISSUANCE OF OAK HILL FINANCIAL COMMON; PAYMENT FOR FRACTIONAL SHARES.
At the Effective Time, Oak Hill Financial shall (i) issue all of the shares of
Oak Hill Financial Common into which shares of Towne Financial Common are to be
converted in the Merger and will deliver the certificates for such shares, or
cause the same to be delivered, to the Exchange Agent; and (ii) deliver to the
Exchange Agent the amount of cash to be paid in lieu of issuing fractional
shares of Oak Hill Financial Common in accordance with subsections 8(b)(ii) and
9(a) of the Merger Agreement.

     5.02  APPLICATIONS FOR REGULATORY APPROVALS. As soon as reasonably
practicable after the execution of this Agreement, Oak Hill Financial shall
prepare and file such applications with the Office of Thrift Supervision, the
Federal Reserve Board, the Ohio Division of Financial Institutions, and any
other regulatory authorities having jurisdiction as may be required to secure
all necessary regulatory approvals of the Merger and shall use its best efforts
to secure such approvals. Oak Hill Financial may also seek regulatory approval
for the formation of a interim state-chartered commercial bank in which Blue Ash
would merged as of, or shortly after, the Effective Time. Oak Hill Financial
shall deliver a draft or drafts of such regulatory applications to Towne
Financial and provide Towne Financial a reasonable opportunity to review such
draft or drafts prior to filing the same.

     5.03  REGISTRATION STATEMENT. As soon as reasonably practicable after the
execution of this Agreement, Oak Hill Financial shall prepare and file the
Registration Statement with the SEC, shall use its best efforts to cause the
Registration Statement to become effective, and shall take such action as may be
required to register or qualify for exemption such shares under the securities
laws of the states where registration or an exemption from registration may be
required. Oak Hill Financial shall deliver a draft or drafts of the Registration
Statement to Towne Financial and provide Towne Financial a reasonable
opportunity to review such draft or drafts prior to filing the same.



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     5.04  SHAREHOLDERS' MEETING. As soon as practicable and, in any event,
within ten business days after the SEC has declared the Registration Statement
effective, Oak Hill Financial will call and mail notice of a meeting of its
shareholders for the purpose of adopting the Merger Agreement and this
Agreement, which meeting shall be held not more than 45 days from the date the
notice is mailed, and the Board of Directors of Oak Hill Financial will to the
extent consistent with their fiduciary duty recommend to the shareholders that
they vote their shares in favor of the Merger.

     5.05  PRESS RELEASES. Oak Hill Financial shall consult in advance with
Towne Financial as to the form and substance of any press release, written
communication with its shareholders, or other public disclosure of matters
related to this Agreement, the Merger Agreement, or the Merger.

     5.06  BEST EFFORTS. Oak Hill Financial will use its best efforts to take or
cause to be taken all actions necessary, proper, or advisable to consummate the
Merger.

     5.07  CONFIDENTIALITY. From and after the date of this Agreement, Oak Hill
Financial and Oak Hill Banks shall, and shall cause their respective Affiliates
to, treat all Confidential Information of Towne Financial and Blue Ash as
confidential, and Oak Hill Financial and Oak Hill Banks shall, and shall cause
their respective Affiliates to, not use any such Confidential Information for
any purpose except in furtherance of the transactions contemplated hereby. In
the event this Agreement is terminated pursuant to Section 11 hereof, Oak Hill
Financial and Oak Hill Banks shall, and shall cause their respective Affiliates
to, promptly return to Towne Financial and Blue Ash all documents and
workpapers, and all copies thereof, containing any such Confidential Information
of Towne Financial and Blue Ash. The covenants of Oak Hill Financial and Oak
Hill Banks contained in this Section 5.07 are of the essence and shall survive
any termination of this Agreement, but shall terminate as of the closing of the
transactions contemplated hereby.

     5.08  COORDINATION OF DIVIDENDS. Oak Hill Financial agrees to cooperate
with Towne Financial to ensure that the shareholders of Towne Financial receive
a regular quarterly dividend from either Towne Financial or Oak Hill Financial
during the quarter in which the Effective Date occurs, but that they do not
receive dividends from both Towne Financial and Oak Hill Financial during such
quarter.

     5.09  INDEMNIFICATION OF DIRECTORS AND OFFICERS. Oak Hill Financial
acknowledges that, by operation of law, at the Effective Time, Oak Hill
Financial will assume any and all legally enforceable obligations of Towne
Financial and Blue Ash to indemnify and defend the directors and officers of
Towne Financial and Blue Ash pursuant to, to the extent of, and in accordance
with the terms and conditions of any such obligations that Towne Financial and
Blue Ash had to indemnify and defend such persons in effect immediately prior to
the Effective Time, in connection with such persons' status or services as
directors and officers of Towne Financial and Blue Ash, whether by contractual
right or by any provision of the articles of incorporation or code of
regulations of Towne Financial and or Blue Ash, with respect to any claim
asserted or made prior to or at any time after the Effective Time. All such
rights to indemnification with respect to any such claim shall continue until
the final disposition of such claim regardless of when such claim was made or
asserted; provided, however, that nothing contained herein shall increase or
lengthen the duration of Oak Hill Financial's obligations with respect to such
indemnification over that to which Towne Financial and Blue Ash would have been
subject had the Merger not been consummated. Oak Hill Financial agrees to use
its reasonable best efforts to cover directors and officers of Towne Financial
and Blue Ash in insurance policies.

     5.10  POOLING. The accounting firm of Grant Thornton LLP has reviewed the
proposed Merger and determined that the Merger qualifies as a "pooling of
interests" for accounting purposes. Neither Oak Hill Financial nor Oak Hill
Banks shall intentionally take or cause to be taken any action, whether before
or after the Effective Date, which would disqualify the Merger as a "pooling of
interests" for accounting purposes or as a "reorganization" within the meaning
of Section 368(a) of the Code.

SECTION 6. CONDITIONS PRECEDENT TO OBLIGATIONS OF ALL PARTIES

     The obligations of each of the parties hereto to consummate the Merger are
subject to the fulfillment, on or before the Closing Date, of the following
conditions precedent:



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<PAGE>   18

     6.01  SHAREHOLDER APPROVAL. The Merger shall have been approved by the
affirmative vote of the holders of at least two-thirds of the issued and
outstanding shares of Towne Financial Common, and by the affirmative vote of the
holders of a majority of the issued and outstanding shares of Oak Hill
Financial.

     6.02  REGULATORY APPROVALS. The Merger shall have been approved by the
Federal Reserve Board, the Ohio Division of Financial Institutions, and any
other governmental authority having jurisdiction, and any applicable waiting
periods shall have expired, with no such approval or authorization containing
any provision or be subject to any condition, which would be materially adverse
to the business of Towne Financial and Blue Ash, Oak Hill Financial or Oak Hill
Banks, either prior to or subsequent to the proposed merger of Towne Financial
and Oak Hill Financial.

     6.03  LITIGATION. No suit, action, investigation by any governmental body,
or legal or administrative proceeding shall have been brought or threatened
which materially questions the validity or legality of the transactions
contemplated hereunder or under the Merger Agreement. For purposes hereof,
advisory opinions or written requests for information which could be used in
connection with such suit, investigation, or proceeding given by governmental
agencies may be deemed to constitute such a threat.

     6.04  FAIRNESS OPINIONS. Towne Financial shall have received a fairness
opinion from RP Financial, LC, dated as of the date of the proxy statement
relating to the Merger stating that the exchange ratio is fair to the
shareholders of Towne Financial, as of such date, from a financial point of view
and Oak Hill Financial shall have received a fairness opinion from Trident
Financial Corporation dated as of the date of the proxy statement relating to
the Merger stating that the contemplated merger of Towne Financial and Oak Hill
Financial is fair to the shareholders of Oak Hill Financial, as of such date,
from a financial standpoint.

     6.05  TAX OPINION. Oak Hill Financial and Towne Financial shall have
received an opinion of Porter, Wright, Morris & Arthur substantially to the
effect that:

           (a) the Merger will constitute a reorganization within the meaning of
Section 368(a)(1)(A);

           (b) no gain or loss will be recognized by Oak Hill Financial (except
for the inclusion in income of amounts resulting from any required changes in
accounting methods or similar items) upon the consummation of the Merger;

           (c) no gain or loss will be recognized by Towne Financial (except for
the inclusion in income of amounts resulting from any required changes in
accounting methods or similar items) upon the consummation of the Merger;

           (d) no gain or loss will be recognized by the shareholders of Towne
Financial who exchange their shares of Towne Financial Common for shares of Oak
Hill Financial Common, except to the extent of any cash received in lieu of a
fractional share of Oak Hill Financial Common;

           (e) the basis of the shares of Oak Hill Financial Common to be
received by shareholders of Towne Financial who receive solely shares of Oak
Hill Financial Common will be the same as the basis of the shares of Towne
Financial Common surrendered in exchange therefor, reduced by any amount
allocated to a fractional share of Oak Hill Financial common with respect to
which cash is received.;

           (f) the holding period of the shares of Oak Hill Financial Common
received by shareholders of Towne Financial will include the holding period of
the shares of Towne Financial Common surrendered in exchange therefor, provided
that the Towne Financial Common was held as a capital asset in the hands of the
shareholder of Towne Financial on the Effective Date;

           (g) where solely cash is received by a shareholder of Towne Financial
in exchange for his or her shares of Towne Financial Common pursuant to the
exercise of dissenters' rights, the cash will be treated as having been received
by such shareholder as a distribution in redemption of his Oak Hill Financial
Common shares received in connection with this transaction, subject to the
provisions and limitations of Section 302 of the Code, and where, as a result of
such distribution, a shareholder owns no shares of Oak Hill Financial Common
either



18
<PAGE>   19

directly or through the application of Section 318(a) of the Code, the
redemption will be a complete termination of interest within the meaning of
Section 302(b)(3) of the Code and such cash will be treated as a distribution in
full payment in exchange for his or her shares of Towne Financial Common, as
provided in Section 302(a) of the Code; and under Section 1001 of the Code, gain
or (subject to the limitations of Section 267 of the Code) loss will be realized
and recognized to such shareholders in an amount equal to the difference between
the amount of such cash and the adjusted basis of the Towne Financial Common
shares surrendered, as determined under Section 1011 of the Code; and

           (h) the payment of cash in lieu of fractional shares of Oak Hill
Financial Common will be treated for federal income tax purposes as if the
fractional shares were distributed as part of the exchange and then were
redeemed by Oak Hill Financial; such cash payments will be treated as having
been received as distributions in full payment in exchange for the stock
redeemed subject to the conditions and limitations of Section 302 of the Code.

     In rendering such tax opinion, Porter, Wright, Morris & Arthur shall be
entitled to rely upon certain assumptions and representations of Towne
Financial's officers, directors and those shareholders of Towne Financial who
own one percent or more of the outstanding shares of Towne Financial Common, and
of officers of Oak Hill Financial reasonably satisfactory in form and substance
to Porter, Wright, Morris & Arthur.

SECTION 7. CONDITIONS PRECEDENT TO OBLIGATIONS OF TOWNE FINANCIAL

     The obligations of Towne Financial to consummate the Merger are subject to
the fulfillment on or before the Closing Date of the following additional
conditions precedent:

     7.01  REPRESENTATIONS AND WARRANTIES. The representations and warranties
made by Oak Hill Financial herein shall be true and correct in all material
respects on the Effective Date with the same force and effect as though such
representations and warranties had been made on and as of such date; Oak Hill
Financial shall have performed in all material respects its obligations
hereunder and under the Merger Agreement to be performed on or before the
Closing Date; and an executive officer of Oak Hill Financial shall have executed
and delivered to Towne Financial a certificate or certificates, dated as of the
Closing Date, in respect of the foregoing matters and in respect of such other
matters as Towne Financial shall reasonably request.

     7.02  OPINION OF COUNSEL. Towne Financial shall have received a favorable
opinion dated as of the Closing Date from Porter, Wright, Morris & Arthur,
counsel for Oak Hill Financial, to the effect that:

           (a) Oak Hill Financial is a corporation duly organized, validly
existing, and in good standing under the laws of the State of Ohio; Oak Hill
Financial has the corporate power and authority to own all of their properties
and assets and to carry on their businesses as presently conducted in all
jurisdictions in which such ownership exists or such business is conducted; and
Oak Hill Financial has the corporate power and authority to merge with Towne
Financial pursuant to this Agreement and the Merger Agreement;

           (b) the execution and delivery of this Agreement and the Merger
Agreement did not, and the consummation of the Merger will not, conflict with
any provision of the articles or certificate of incorporation, regulations,
bylaws, or other charter documents of Oak Hill Financial;

           (c) the execution and delivery of this Agreement and the Merger
Agreement and the consummation of the Merger have been authorized by all
necessary corporate action of Oak Hill Financial; and this Agreement and the
Merger Agreement are valid and binding agreements of Oak Hill Financial
enforceable in accordance with their terms, except as may be limited by
bankruptcy, insolvency, or other similar laws affecting enforcement of
creditors' rights generally and except that the enforceability of the
obligations of Oak Hill Financial is subject to general principles of equity;

           (d) the shares of Oak Hill Financial Common to be issued by Oak Hill
Financial in the Merger have been authorized and, upon issuance, will be fully
paid and nonassessable and will not be subject to the preemptive rights of any
shareholder of Oak Hill Financial;



19
<PAGE>   20

           (e) all necessary regulatory approvals have been received and all
applicable waiting periods have expired;

           (f) Oak Hill Financial is a duly and validly registered Bank Holding
Company;

           (g) Oak Hill Banks is a state-chartered bank; and

           (h) Oak Hill Banks deposit accounts are insured by BIF to the fullest
extent permitted by law.

     Such opinion may be governed by the Accord. In giving such opinion, such
counsel may rely as to matters of fact, without independent investigation, to
the extent such counsel deems such reliance to be customary, reasonable, and
appropriate, on certificates of federal, state, or local government officials
and on certificates of officers and directors of Oak Hill Financial or Oak Hill
Banks. Such counsel may expressly exclude any opinions as to choice of law
matters and antitrust matters and may add such other qualifications and
explanations of the basis of its opinions as are consistent with the Accord.

     7.03  EFFECTIVENESS OF THE REGISTRATION STATEMENT; NASD LISTING. Towne
Financial shall have received a certificate from a duly authorized officer of
Oak Hill Financial to the effect that the Registration Statement has become
effective by an order of the SEC, the Oak Hill Financial Common to be exchanged
in the Merger has been qualified or is exempt under all applicable state
securities laws, and there has been no stop order issued or threatened by the
SEC that suspends or would suspend the effectiveness of the Registration
Statement, and no proceeding has been commenced or overtly threatened for such
purpose. The shares of Oak Hill Financial Common to be issued to Towne Financial
shareholders pursuant to the Merger Agreement shall have been authorized for
listing on the NASDAQ National Market upon official notice of issuance.

     7.04  MATERIAL ADVERSE CHANGE. Since December 31, 1998, there shall not
have occurred any material adverse change in the results of operation, financial
condition, properties, or business of Oak Hill Financial on a consolidated
basis, other than any such change attributable to or resulting from (i) changes
in law, regulation, or generally accepted accounting principles of general
application to the banking or thrift industries, (ii) changes in economic
conditions that affect the banking and thrift industries generally, including
changes in the general level of interest rates, or (iii) any matter or matters
relating to Oak Hill Financial which have been disclosed in the Oak Hill
Financial Disclosure Memorandum as of the date of this Agreement.

SECTION 8. CONDITIONS PRECEDENT TO OBLIGATIONS OF OAK HILL FINANCIAL

     The obligations of Oak Hill Financial to consummate the Merger are subject
to the fulfillment on or before the Closing Date of the following additional
conditions precedent:

     8.01  REGULATORY APPROVAL OF THE MERGER. The Merger shall have been
approved by the Federal Reserve Board, the Division of Financial Institutions,
and any other governmental authority having jurisdiction, and any applicable
waiting periods shall have expired, with no such approval or authorization
containing any provision which would be materially adverse to the business of
Oak Hill Financial or Oak Hill Banks.

     8.02  REPRESENTATIONS AND WARRANTIES. The representations and warranties
made by Towne Financial and Blue Ash herein shall be true and correct in all
material respects on the Closing Date with the same force and effect as though
such representations and warranties had been made on and as of such date; Towne
Financial and Blue Ash shall have performed in all material respects its
obligations hereunder and under the Merger Agreement to be performed on or
before the Closing Date; and the chief executive officer and principal financial
officer of Towne Financial shall have executed and delivered to Oak Hill
Financial certificates, dated as of the Closing Date, in respect of the
foregoing matters and in respect of such other matters as Oak Hill Financial
shall reasonably request.

     8.03  OPINION OF COUNSEL. Oak Hill Financial shall have received a
favorable opinion dated as of the Effective Date from Cors & Bassett, as counsel
for Towne Financial, acceptable to Oak Hill Financial, to the effect that:



20
<PAGE>   21

           (a) Towne Financial is a unitary savings and loan holding company,
duly organized, validly existing, and in good standing under the laws Ohio; Blue
Ash is a member in good standing of the FHLB of Cincinnati; all eligible
accounts of deposit in Blue Ash are insured by the FDIC to the fullest extent
permitted by law; all corporate action required to be taken by the directors and
shareholders of Towne Financial to authorize the transactions contemplated by
this Agreement and the Merger Agreement have been taken; and Towne Financial has
the corporate power to effect the Merger in accordance with the terms of this
Agreement and the Merger Agreement;

           (b) the execution and delivery of this Agreement and the Merger
Agreement did not, and the consummation of the Merger will not, conflict with
any provision of the articles or certificate of incorporation, regulations,
bylaws, or other charter documents of Towne Financial; and

           (c) the execution and delivery of this Agreement and the Merger
Agreement and the consummation of the Merger have been authorized by all
necessary corporate action of Towne Financial; and this Agreement and the Merger
Agreement are valid and binding agreements of Towne Financial enforceable in
accordance with their terms, except as may be limited by bankruptcy, insolvency,
reorganization, or similar laws affecting enforcement of creditors' rights
generally and except that the enforceability of the obligations of Towne
Financial may be subject to general principles of equity.

Such opinion may be governed by the Accord. In giving such opinion, such counsel
may rely as to matters of fact, without independent investigation, to the extent
such counsel deems such reliance to be customary, reasonable, and appropriate,
on certificates of federal, state, or local government officials and on
certificates of officers and directors of Towne Financial and Blue Ash. Such
counsel may expressly exclude any opinions as to choice of law matters and
antitrust matters and may add such other qualifications and explanations of the
basis of its opinions as are consistent with the Accord.

     8.04  AGREEMENTS OF AFFILIATES. Each director of Towne Financial and their
"affiliates," for purposes of Rule 145 under the 1933 Act, shall deliver to Oak
Hill Financial prior to the Effective Date a written agreement, providing that
such person will not sell the shares of Oak Hill Financial Common to be received
by such person in the Merger unless such sales are pursuant to an effective
registration statement under the 1933 Act or pursuant to Rule 145 of the SEC or
another exemption from the registration requirements under the 1933 Act.

     8.05  DISSENTING SHAREHOLDERS. The total number of shares of Towne
Financial Common, if any, as to which the right to dissent has been asserted
under Section 1701.85 of the Ohio Revised Code shall not exceed five percent
(5%) of the total number of outstanding shares of Towne Financial Common.

     8.06  MATERIAL ADVERSE CHANGE. Since December 31, 1998, there shall not
have occurred any material adverse change in the consolidated results of
operations, financial condition, properties, or business of Towne Financial and
Blue Ash, other than any such change attributable to or resulting from
(i) changes in law, regulation, or generally accepted accounting principles of
general application to the banking or thrift industries, (ii) changes in
economic conditions that affect the banking and thrift industries generally,
including changes in the general level of interest rates, or (iii) any matter or
matters relating to Towne Financial and Blue Ash which have been disclosed in
the Towne Disclosure Memorandum as of the date of this Agreement.

     8.07  TITLE INSURANCE. For each parcel of the Real Property described in
the Towne Disclosure Memorandum as being owned by Towne Financial and Blue Ash,
and for each lease for any parcel of the Real Property described in the Towne
Disclosure Memorandum as being leased by Towne Financial and Blue Ash, Oak Hill
Financial shall have obtained a title insurance commitment (ALTA 1966 form or
its equivalent) for a fee owner's title insurance policy or leasehold owner's
title insurance policy, as appropriate, each in an amount equal to the carrying
cost of the premises or leasehold interest to be insured (including all
improvements thereon), on the books of Towne Financial and Blue Ash as of
December 31, 1998. Each title insurance commitment shall show that marketable
fee simple title to the owned premises or that valid leasehold title to the
leased premises, as appropriate, is in the name of Towne Financial and Blue Ash,
and that it is free and clear of any liens and encumbrances except taxes and
assessments not delinquent and utility and other easements that do not interfere
with the use of the property for the business being conducted thereon. Each such
commitment shall provide that such fee owner's policy committed for therein
shall be an ALTA 1970 form, revised in 1984, and each leasehold owner's policy
shall be an ALTA 1975 form, or other form acceptable to Oak Hill Financial.



21
<PAGE>   22

     8.08  SURVEY. Oak Hill Financial Banks shall have obtained current land
surveys of those parcels of the Real Property. Each survey to be conducted and
prepared by a duly licensed land surveyor, with such survey to be a duly
certified ALTA/ACSM field survey, which confirm that the Real Property is not
subject to any easements, restrictions, set backs, encroachments, or other
limitations except utility and other easements that do not interfere with the
use of the Real Property for the business then being conducted thereon, and that
the Real Property is not located in any flood hazard area.

     8.09  PHASE I. For each parcel of the Real Property described in the Towne
Disclosure Memorandum as being leased or owned by Towne Financial and Blue Ash,
Oak Hill Financial shall have completed a "Phase I" environmental site
assessment prepared by a licensed environmental engineering firm indicating that
there is no evidence of contamination with Hazardous Substances or other
violations of environmental Laws and concluding that no testing or additional
investigations appears to be warranted.

     8.10  CONSENTS AND APPROVALS. Towne Financial and Blue Ash shall have
obtained any and all consents or approvals that may be required under the terms
of (i) any contract, agreement, lease, or other obligation or commitment,
including, but not limited to, the types described in Section 2.18 hereof, to
which either Towne Financial or Blue Ash is a party or by which either Towne
Financial or Blue Ash, or any of their property or assets, is bound, or (ii) any
license or permit of Towne Financial or Blue Ash, in order to avoid the
occurrence of any breach or default which may result from the consummation of
the Merger and which, if not obtained, is reasonably likely to have,
individually or in the aggregate, a material adverse effect on Oak Hill
Financial, Oak Hill Banks, Towne Financial or Blue Ash.

     8.11  AGREEMENT TO VOTE. Oak Hill Financial shall have received from each
of Towne Financial' shareholders who own in excess of five percent (5%) of the
outstanding shares of Towne Financial Common an agreement, substantially in the
form attached hereto as EXHIBIT A, to vote in favor of the Merger all shares of
Towne Financial Common owned by them or over which they have the power to vote.

     8.12  SHAREHOLDERS' EQUITY. The total shareholders' equity of Towne
Financial as of the end of the most recent calendar quarter preceding the
Closing Date and as of the Closing Date shall not be less than the total
shareholders' equity of Towne Financial as of December 31, 1998, except for
Towne Financial' expenses relating to the Merger and adjustments relating to the
Merger as requested by Oak Hill Financial.

     8.13  CONVERSION OF STOCK OPTIONS.

           (a) All outstanding Towne Stock Options held by persons who are not
employees of either Towne Financial or Blue Ash Building & Loan Association on
the Effective Date, including, but not limited to, non-employee directors of
either of them, shall have been exercised, or terminated prior to the Effective
Date, or such persons shall have entered into agreements with Oak Hill Financial
substantially in the form attached hereto as EXHIBIT B, providing for the
conversion on the Effective Date of all Towne Stock Options held by them to Oak
Hill Stock Options in accordance with Section 8(d) of the Merger Agreement.

           (b) All holders of outstanding Towne Stock Options who are employees
of either Towne Financial or Blue Ash Building & Loan Association on the
Effective Date shall have been exercised, or terminated prior to the Effective
Date, or shall have entered into agreements with Oak Hill Financial
substantially in the form attached hereto as EXHIBIT B, providing for the
conversion on the Effective Date of all Towne Stock Options held by them to Oak
Hill Stock Options in accordance with Section 8(d) of the Merger Agreement.

           (c) Towne shall have certified to Oak Hill Financial as of the
Effective Date that the actions described in paragraph (a) and (b) of this
Section 8.13 have been taken.

     8.14  EMPLOYMENT AGREEMENTS. All outstanding employment agreements between
Towne Financial and an employee or between Blue Ash and an employee (other than
the employment contract between William S. Siders and Towne Financial), shall
have been terminated or converted to employment agreements acceptable to Oak
Hill Financial and each employee shall have agreed in writing that no
termination fee is due a result of such termination or conversion.



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<PAGE>   23

     8.15  PRICE OF OAK HILL FINANCIAL COMMON. The Average Closing Price of Oak
Hill Financial Common shall be equal to, or greater than, 80% of the Starting
Price.

     8.16  PENDING OR THREATENED LITIGATION. There is no action, suit,
proceeding, or claim by any shareholder or former shareholder of Towne
Financial, pending or threatened, against (i) Oak Hill Financial, Towne
Financial or Blue Ash, (ii) the assets, business, or goodwill of Oak Hill
Financial, Towne Financial or Blue Ash, or (iii) any director, officer, or
Principal Shareholder of Oak Hill Financial or Towne Financial, which is arising
from or is related to the consummation of the merger of Towne Financial and Oak
Hill Financial which is contemplated by this Agreement; provided however, that
this condition precedent to the obligation of Oak Hill Financial to close the
Merger shall be satisfied if coverage for any such claim shall have acknowledged
by an insurance carrier in a writing acceptable to Oak Hill Financial.

SECTION 9. CLOSING DATE

     Unless the parties otherwise agree, the closing of the transactions
contemplated by this Agreement and the Merger Agreement ("Closing Date") shall
be held at 11:00 a.m. at the offices of Porter, Wright, Morris & Arthur in
Cincinnati, Ohio, on the last business day of the month in which the conditions
specified in Sections 6.01 and 6.02 hereof have been satisfied.

SECTION 10. AMENDMENT

     At any time prior to the Closing Date, the parties, subject to paragraph 14
of the Merger Agreement, may modify, amend, or supplement this Agreement by
mutual agreement authorized by their respective boards of directors and
evidenced by an instrument in writing executed and delivered by the parties
hereto, whether before or after the shareholders of Towne Financial has adopted
this Agreement.

SECTION 11. TERMINATION

     11.01  TERMINATION. This Agreement and the Merger Agreement shall terminate
on December 31, 1999, unless a later date is agreed upon in writing by the
parties, and may be terminated and the Merger may be abandoned at any time prior
to the Effective Time as follows:

           (a) by the mutual consent, evidenced in writing, of the boards of
directors of Oak Hill Financial and Towne Financial;

           (b) by the board of directors of Oak Hill Financial, by giving
written notice thereof to Towne Financial, which notice shall specify in
reasonable detail the grounds therefor: (i) if any condition precedent to
performance by Oak Hill Financial and Oak Hill Banks has not been satisfied or
waived; (ii) if Towne Financial has not fully performed its obligations and
agreements hereunder and under the Merger Agreement; or (iii) if any of the
representations of Towne Financial set forth herein are untrue or incorrect in
any material respect; or

           (c) by the board of directors of Towne Financial, by giving written
notice thereof to Oak Hill Financial, which notice shall specify in reasonable
detail the grounds therefor: (i) if any condition precedent to performance by
Towne Financial has not been satisfied or waived; (ii) if Oak Hill Financial and
Oak Hill Banks have not fully performed their obligations and agreements
hereunder and under the Merger Agreement; or (iii) if any of the representations
of Oak Hill Financial set forth herein are untrue or incorrect in any material
respect.

     11.02  SURVIVAL OF CERTAIN PROVISIONS UPON TERMINATION. Upon a termination
of this Agreement as provided herein, this Agreement and the Merger Agreement
shall become void and there shall be no further obligation or liability on the
part of any party hereto or their respective shareholders, directors, or
officers, except pursuant to Sections 4.09, 5.07, 11.03, and 12 hereof, which
shall survive a termination of this Agreement in accordance with the express
terms of such Sections.

     11.03  TERMINATION FEE. During the term of this Agreement, if (i) an
Unsolicited Acquisition Proposal is submitted to and approved by the
shareholders of Towne Financial at any time prior to the Effective Time, or
(ii) an Unsolicited Acquisition Proposal is received by Towne Financial or is
made directly to the shareholders of Towne



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<PAGE>   24

Financial at any time prior to the holding of the meeting of the shareholders of
Towne Financial to be called pursuant to Section 4.02 hereof, and the board of
directors of Towne Financial fails to recommend to the shareholders of Towne
Financial approval of the Merger Agreement or this Agreement, withdraws such
recommendation previously made to the shareholders of Towne Financial, or fails
to solicit proxies of shareholders of Towne Financial to approve the Merger, and
the Merger Agreement and this Agreement are subsequently rejected by the
shareholders of Towne Financial at such meeting, then, in either such event,
Towne Financial shall pay to Oak Hill Financial, within five business days after
a termination of the Merger Agreement and this Agreement following such an
event, a cancellation fee in the amount of $500,000, as liquidated damages, and
not as a penalty, and, upon the payment in full thereof, Towne Financial shall
have no further liability under this Agreement or the Merger Agreement. The
obligations of Towne Financial under this Section 11.03 shall survive a
termination of this Agreement, provided that, at the time of such termination,
(1) an event described in Section 7.04 hereof has not occurred, and (2) Towne
Financial does not have the right to terminate this Agreement by virtue of a
material breach of this Agreement or the Merger Agreement by Oak Hill Financial
or Oak Hill Banks.

SECTION 12. EXPENSES

     Except as otherwise expressly provided herein, all expenses incurred by or
on behalf of the parties hereto in connection with the authorization,
preparation, execution, and consummation of this Agreement and the Merger
Agreement, including, without limitation, all fees and expenses of agents,
representatives, printers, and counsel employed by the parties hereto, and
taxes, if any, shall be borne solely by the party which has or shall have
incurred the same. The covenants of the parties contained in this Section 12
shall survive a termination of this Agreement for any reason.

SECTION 13. NOTICES

     All notices, requests, demands, and other communications hereunder shall be
in writing and shall be deemed to have been duly given if delivered personally,
or by private mail or messenger service addressed as indicated below, or at such
other address as such party may designate in writing to the other parties, or
sent by facsimile and confirmed by first-class, certified mail, postage prepaid,
addressed as indicated below, or at such other address as such party may
designate in writing to the other parties:

     (a) If to Towne Financial, to:

         William S. Siders
         Executive Vice President
         4811 Cooper Road
         Blue Ash, Ohio  45242

with a copy to:

         Richard J. Valleau, Esq.
         Cors & Bassett
         537 East Pete Rose Way

         Suite 400
         Cincinnati, Ohio 45202-3502

     (b) If to Oak Hill Financial or Oak Hill Banks, to:

         John D. Kidd
         President
         Oak Hill Financial, Inc.
         14621 State Route 93
         Jackson, Ohio  45640



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with a copy to:

         H. Grant Stephenson, Esq.
         Porter, Wright, Morris & Arthur
         41 South High Street
         Columbus, Ohio  43215

SECTION 14. GENERAL PROVISIONS

     14.01  ENTIRE AGREEMENT. This Agreement, together with the Merger Agreement
and the documents referred to or incorporated herein or therein, reflect the
entire agreement among the parties with respect to the subject matter thereof
and supersede all prior agreements and understandings, oral or written, among
the parties with respect to such subject matter, and no party shall be liable or
bound to any other party in any manner by any representations, warranties, or
covenants except as specifically set forth herein or therein.

     14.02  WAIVER. At any time on or prior to the Effective Date, any party
hereto may (i) waive any inaccuracies in the representations and warranties of
the other parties contained in this Agreement and the Merger Agreement or in any
document delivered pursuant hereto or thereto, or (ii) waive compliance by the
other parties with any of the conditions, covenants, and agreements contained in
this Agreement or the Merger Agreement.

     14.03  ASSIGNMENT. Neither this Agreement nor any rights, interests, or
obligations hereunder shall be assigned or transferred by operation of law or
otherwise by any of the parties hereto without the prior written consent of the
other party.

     14.04  BENEFIT. Except as specifically provided herein, nothing in this
Agreement, express or implied, is intended to confer upon any person or entity
other than the parties hereto and their successors in interest any rights or
remedies under or by reason of this Agreement.

     14.05  COUNTERPARTS. This Agreement may be executed in any number of
counterparts, each of which shall be deemed an original for all purposes, but
such counterparts taken together shall constitute one and the same instrument.

     14.06  GOVERNING LAW. This Agreement shall be construed and enforced in
accordance with the laws of the State of Ohio without regard to its conflicts of
laws principles.

     14.07  INCORPORATION BY REFERENCE. The Merger Agreement, the Disclosure
Memoranda, and all Exhibits attached hereto are hereby incorporated by reference
herein.

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the day and year first above written.

OAK HILL FINANCIAL, INC.

By: /s/ John D. Kidd
   ------------------------
John D. Kidd, President

TOWNE FINANCIAL CORPORATION

By: /s/ Neil S. Strawser
   ------------------------
Neil S. Strawser, Chairman of the Board



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                                             EXHIBIT A TO SUPPLEMENTAL AGREEMENT



                              SHAREHOLDER AGREEMENT

     The undersigned (the "Shareholder"), who is a shareholder of Towne
Financial Corporation., an Ohio corporation ("Towne Financial"), has executed
this Shareholder Agreement to be effective as of the date set forth next to such
Shareholder's signature below.


                                    RECITALS

     A. The Shareholder owns or has the power to vote, either exclusive or
shared, ____________ shares of the common stock, $1.00 par value, of Towne
Financial (together with all shares of such stock which the Shareholder
subsequently acquires or obtains the power to vote, the "Shares").

     B. Towne Financial has entered into (i) a certain Agreement and Plan of
Merger with Oak Hill Financial, Inc., an Ohio corporation ("Oak Hill
Financial"), dated March 11, 1999 (the "Merger Agreement"), and (ii) a certain
Supplemental Agreement with Oak Hill Financial), also dated March 11, 1999 (the
"Supplemental Agreement"), pursuant to which Towne Financial is to be merged
into Oak Hill Financial (the "Merger").

     C. Under the terms of the Merger Agreement, Towne Financial has agreed to
call a meeting of its shareholders for the purpose of voting upon the approval
of the Merger (together with any adjournments thereof, the "Shareholders'
Meeting").

     D. It is a condition to the obligations of Oak Hill Financial under the
Merger Agreement and the Supplemental Agreement that certain shareholders of
Towne Financial, including the Shareholder, shall have agreed to vote their
shares of Towne Financial stock in favor of the Merger.


                                    AGREEMENT

     Accordingly, the parties hereto hereby agree as follows:

     1. AGREEMENT TO VOTE. The Shareholder agrees to vote the Shares as follows:

        (a) in favor of the adoption of the Merger Agreement and the
Supplemental Agreement and the approval of the Merger at the Shareholders'
Meeting;

        (b) against the approval of any proposal relating to a competing merger
or business combination involving an acquisition of Towne Financial or the
purchase of all or a substantial portion of the assets of Towne Financial by any
person or entity other than Oak Hill Financial; and

        (c) against any other transaction which is inconsistent with the
obligation of Towne Financial to consummate the Merger in accordance with the
Merger Agreement and the Supplemental Agreement.

     2. LIMITATION ON VOTING POWER. It is expressly understood and acknowledged
that nothing contained herein is intended to restrict the Shareholder from
voting on any matter, or otherwise from acting, in the Shareholder's capacity as
a director or officer of Towne Financial with respect to any matter, including
but not limited to, the management or operation of Towne Financial.

     3. TERMINATION. This Agreement shall terminate on the earlier of (a) the
first anniversary of this Agreement, (b) the date on which the Merger Agreement
and Supplemental Agreement are terminated in accordance



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<PAGE>   27

with Section 11 of the Supplemental Agreement, (c) the date on which the Merger
is consummated, or (d) the death of the Shareholder.

     4. REPRESENTATIONS, WARRANTIES, AND ADDITIONAL COVENANTS OF THE
SHAREHOLDER. The Shareholder hereby represents and warrants to Oak Hill
Financial that the Shareholder has the capacity and all necessary power and
authority to vote the Shares and that this Agreement constitutes a legal, valid,
and binding obligation of the Shareholder, enforceable in accordance with its
terms, except as may be limited by bankruptcy, insolvency, or similar laws
affecting enforcement of creditors rights generally. The Shareholder further
agrees that, during the term of this Agreement, the Shareholder will not sell or
otherwise voluntarily dispose of any of the Shares which are owned by the
Shareholder or take any other voluntary action which would have the effect of
removing the Shareholder's power to vote the Shares or which would be
inconsistent with this Agreement.

     5. SPECIFIC PERFORMANCE. The undersigned hereby acknowledges that damages
would be an inadequate remedy for any breach of the provisions of this Agreement
and agrees that the obligations of the Shareholder hereunder shall be
specifically enforceable and that Oak Hill Financial shall be entitled to
injunctive or other equitable relief upon such a breach by the Shareholder. The
Shareholder further agrees to waive any bond in connection with the obtaining of
any such injunctive or equitable relief. This provision is without prejudice to
any other rights that Oak Hill Financial may have against the Shareholder for
any failure to perform his obligations under this Agreement.

     6. GOVERNING LAW. This Agreement shall be construed and enforced in
accordance with the laws of the State of Ohio, without regard to its conflicts
of laws principles.

     IN WITNESS WHEREOF, the undersigned has executed this Shareholder Agreement
as of the day and year first above written.

                                  SHAREHOLDER:


Date:  _____________________________

                                         Signature


                                         Print Name



                                 ACKNOWLEDGMENT

STATE OF OHIO

COUNTY OF

     The foregoing instrument was acknowledged before me this ___ day of
____________, 1999, by _____________________________.



                                        ________________________________________
                                                     Notary Public


                                        My Commission expires:_________________.



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                                             EXHIBIT B TO SUPPLEMENTAL AGREEMENT



                        STOCK OPTION CONVERSION AGREEMENT

     This Agreement is entered into this ___ day of ___________, 1999, by and
among ________________________ (the "Optionholder"), OAK HILL FINANCIAL, INC.,
an Ohio corporation ("Oak Hill Financial"), and TOWNE FINANCIAL CORPORATION., an
Ohio corporation ("Towne Financial").


                                    RECITALS

     A. Oak Hill Financial is a registered bank holding company.

     B. Oak Hill Financial and Towne Financial have entered into a certain
Agreement and Plan of Merger, dated March 11, 1999 (the "Merger Agreement"), and
Oak Hill Financial and Towne Financial have entered into a certain Supplemental
Agreement, also dated March 11, 1999 (the "Supplemental Agreement"), pursuant to
which Towne Financial is to be merged into Oak Hill Financial (the "Merger").
Upon the consummation of the Merger, Oak Hill Financial will be the successor by
merger to Towne Financial. (All capitalized terms used herein and not otherwise
defined herein shall have the meanings assigned to them in the Merger Agreement
or the Supplemental Agreement.)

     C. The Optionholder is currently a director, officer, employee or former
employee of Towne Financial or Blue Ash Building & Loan Association.

     D. The Optionholder is also currently the holder of a Towne Stock Option
(the "Towne Option") to purchase certain shares of Towne Common, pursuant to the
either the Towne 1992 Stock Option Plan or the Towne 1997 Stock Option Plan and
a certain Stock Option Agreement executed by the Optionholder and Towne
Financial pursuant to such plan (the "Towne Stock Option Agreement"). The total
number of shares subject to the Towne Option as of the date of this Agreement,
the exercise price for the shares which may be purchased under such option (the
"Towne Exercise Price"), the dates on or after which such option is exercisable,
and the number of shares as to which such option is exercisable after each
particular exercise date are set forth on Exhibit A which is attached hereto and
incorporated by reference herein.

     E. The Towne Stock Option Agreement provides that it shall be binding upon
the successors of Towne Financial.

     F. Oak Hill Financial has previously established and adopted the Oak Hill
1995 Stock Option Plan, a copy of which is attached as Exhibit B hereto and
incorporated by reference herein. The terms and conditions contained in the Oak
Hill 1995 Stock Option Plan relating to (among other things) the exercise of
options granted under that plan are different from those contained in either of
the Towne Stock Option Plans.

     G. Pursuant to the terms of the Merger Agreement, upon the consummation of
the Merger, all shares of Towne Common are to be converted into shares of Oak
Hill Financial Common and all options granted under the Towne Stock Option Plans
are to be converted into options to purchase Oak Hill Financial Common subject
to the terms of the Oak Hill 1995 Stock Option Plan.


                                    AGREEMENT

     In consideration of the foregoing and of the mutual promises contained
herein, the parties agree as follows:



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<PAGE>   29

     1. Upon the consummation of the Merger, and effective as of the Effective
Time, the Towne Option shall be converted into a Oak Hill Stock Option subject
to all of the terms and conditions of the Oak Hill 1995 Stock Option Plan (the
"Oak Hill Option"), and all further rights of the Optionholder and obligations
of Towne Financial under the Towne Stock Option Plan and the Towne Stock Option
Agreement shall be extinguished.

        (a) The number of shares of Oak Hill Financial Common to be subject to
the Oak Hill Option shall be equal to the number of shares of Towne Common
subject to the Towne Option as of the Effective Time multiplied by the
Conversion Ratio, rounded off to the nearest whole number of shares of Oak Hill
Financial Common.

        (b) The exercise price to be payable upon an exercise of the Oak Hill
Option shall be equal to the Towne Exercise Price divided by the Conversion
Ratio.

        (c) The dates after which the Towne Financial Option shall be
exercisable shall be the same as those provided under the Towne Option; and the
number of shares of Oak Hill Financial Common as to which the Oak Hill Option
shall be exercisable after each particular exercise date shall be in the same
ratio to the total number of shares subject to the Oak Hill Option as the number
of shares of Towne Common exercisable after the such exercise date is to the
total number of shares of Towne Common subject to the Towne Option, rounded to
the nearest whole number of shares of Oak Hill Financial Common.

        (d) The Oak Hill Option shall be evidenced by and subject to the terms
of a Stock Option Agreement to be executed by the Optionholder pursuant to the
terms of the Oak Hill 1995 Stock Option Plan at or after the Effective Time,
which shall be effective as of the Effective Time.

        (e) The Optionholder acknowledges and agrees that, for the purposes of
Section 424 of the Internal Revenue Code of 1986, as amended, and the
regulations promulgated thereunder, he or she will not receive any "additional
benefits" (as that term is defined in said Section 424 and the regulations
promulgated thereunder) as a result of the conversion of the Towne Option into
the Oak Hill Option hereunder, and hereby disclaims and agrees to return any
such additional benefits that he or she may receive.

     2. Towne Financial shall notify Oak Hill Financial promptly if the
Optionholder's employment with Towne Financial or Blue Ash Building & Loan
Association is terminated at any time prior to the Effective Time, and shall
furnish to Oak Hill Financial at the Effective Time a certificate, signed by an
officer of Towne Financial, stating (if it is true) that the Optionholder is an
employee of Towne Financial or Blue Ash Building & Loan Association as of that
date and listing the number of shares of Towne Common subject to the Towne
Option as of that date. Any notice given pursuant to this Section shall be given
in accordance with the provisions of Section 13 of the Supplemental Agreement.

     3. This Agreement shall terminate automatically upon a termination of the
Merger Agreement at any time prior to the consummation of the Merger, whereupon
this Agreement shall become null and void and no party shall have any further
rights or obligations hereunder.

     4. The rights of the Optionholder under this Agreement may not be
transferred or assigned to any person other than the Optionholder, except by
will or the laws of descent and distribution.

     5. This Agreement shall be construed and enforced in accordance with the
laws of the State of Ohio without regard to its conflict of laws principles.

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the day and year first above written.



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<PAGE>   30

THE OPTIONHOLDER:                      OAK HILL FINANCIAL, INC.

                                       By:

           Signature

                                       Name:

    Name (please type or print)        Title:



TOWNE FINANCIAL CORPORATION

By

Name

Title:

30