Exhibit 31.2
                     Certification Pursuant to Section 302
                         of Sarbanes-Oxley Act of 2002

     I, Mark A. King, certify that:

     1.     I have reviewed this Annual Report on Form 10-K of Mid-Wisconsin
Financial Services, Inc. (the "registrant");

     2.     Based on my knowledge, this report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this report;

     3.     Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects
the financial condition, results of operations and cash flows of the registrant
as of, and for, the periods presented in this report;

     4.     The registrant's other certifying officer(s) and I are responsible
for establishing and maintaining disclosure controls and procedures (as defined
in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-
15(e))for the registrant and we have:

        (a) designed such disclosure controls and procedures, or caused such
     disclosure controls and procedures to be designed under our supervision,
     to ensure that material information relating to the registrant, including
     its consolidated subsidiaries, is made known to us by others within those
     entities, particularly during the period in which this report is being
     prepared;

        (b) designed such internal control over financial reporting, or caused
     such internal control over financial reporting to be designed under our
     supervision, to provide reasonable assurance regarding the reliability of
     financial reporting and the preparation of the financial statements for
     external reporting purposes in accordance with generally accepted
     accounting principles;

        (c) evaluated the effectiveness of the registrant's disclosure controls
     and procedures and presented in this report our conclusions about the
     effectiveness of the disclosure controls and procedures, as of the end of
     the period covered by this report based on such evaluation; and

        (d) disclosed in this report any change in the registrant's internal
     control over financial reporting that occurred during the registrant's
     fourth fiscal quarter that has materially affected, or is reasonably
     likely to materially affect, the registrant's internal control over
     financial reporting; and

     5.     The registrant's other certifying officer(s) and I have disclosed,
based on our most recent evaluation of internal control over financial
reporting, to the registrant's auditors and the audit committee of registrant's
board of directors (or persons performing the equivalent functions):
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     (a)    all significant deficiencies and material weaknesses in the design
or operation of internal control over financial reporting which are reasonably
likely to adversely affect the registrant's ability to record, process,
summarize and report financial information; and

     (b)    any fraud, whether or not material, that involves management or
other employees who have a significant role in the registrant's internal
control over financial reporting.

Date:  March 26, 2010               MARK A. KING
                                    Mark A. King
                                    Chief Financial Officer and Chief
                                    Operations Officer