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Exhibit 99.1

CERTIFICATION

I, Walter E. Daller, Jr., Chairman, President and
Chief Executive Officer, certify, that:

1.     I have reviewed
this quarterly report on Form 10-K of Harleysville National
Corporation.

2.     Based on my
knowledge, the quarterly 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 quarterly
report.

3.     Based on my
knowledge, the financial statements, and other financial
information included in this quarterly 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 quarterly report.

4.     The
registrants other certifying officer and I are responsible
for establishing and maintaining disclosure controls and
procedures (as defined in Exchange Act Rules 13a-14 and
15d-14) for the registrant and we have:



| |                                                                                                                                                                                                                                                                                                                 
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) designed such disclosure controls and
    procedures 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 annual report is being prepared;
|
| | (b) evaluated the effectiveness of the
    registrants disclosure controls and procedures as of a
    date within 90 days prior to the filing date of this annual
    report (the Evaluation Date); and                                                                                                      
|
| | (c) presented in this quarterly report our
    conclusions about the effectiveness of the disclosure controls
    and procedures based on our evaluation as of the Evaluation Date.                                                                                                                             

5.     The
registrants other certifying officer and I have disclosed,
based on our most recent evaluation, to the registrants
auditors and the audit committee of registrants board of
directors (or persons performing the equivalent function):



| |                                                                                                                                                                                                                                                                                                                           
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) all significant deficiencies in the
    design or operation of the internal controls which could
    adversely affect the registrants ability to record,
    process, summarize and report financial data and have identified
    for the registrants auditors any material weaknesses in
    internal controls; and
|
| | (b) any fraud, whether or not material, that
    involves management or other employees who have a significant
    role in the registrants internal controls.                                                                                                                                                            

6.     The
registrants other certifying officer and I have indicated
in this quarterly report whether or not there were significant
changes in internal controls or in other factors that could
significantly affect the internal controls subsequent to the
date of our most recent evaluation, including any corrective
actions with regard to significant deficiencies and material
weaknesses.



| |    
| | ---
| | By:

| |                          
| | -------------------------
| | -s- Walter E. Daller, Jr.



| |                                                                                              
| | ---------------------------------------------------------------------------------------------
| | Chairman, President and 
     Chief Executive Officer 
     Harleysville National Corporation

Date: February 28, 2003

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