1 EXHIBIT 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS We consent to the incorporation by reference in Registration Statement No. 333-68595 of Commercial National Financial Corporation on Form S-8 of our report dated May 23, 2001, included in this Annual Report on Form 11-K of Commercial Bank Employee Savings and Stock Ownership Plan for the year ended December 31, 2000. Crowe, Chizek and Company LLP South Bend, Indiana June 27, 2001