COMMERCIAL NATIONAL FINANCIAL CORPORATION

                                  EXHIBIT 32.2

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Commercial National Financial
Corporation (the "Company") on Form 10-Q for the quarterly period ended June 30,
2004, as filed with the Securities and Exchange Commission on the date hereof
(the "Report"), I, Patrick G. Duffy, Chief Financial Officer of the Company,
certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906
of the Sarbanes Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of sections 13(a) or 15(d)
of the Securities and Exchange Act of 1934; and

         (2) The information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Company.

By:

/s/ Patrick G. Duffy
- --------------------
Patrick G. Duffy
Chief Financial Officer
July 31, 2004

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