EXHIBIT 23 CONSENT OF INDEPENDENT AUDITORS CONSENT OF INDEPENDENT AUDITORS We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 33-70448) pertaining to the First Shenango Bancorp, Inc. 1993 Stock Option Plan, First Federal Savings Bank of New Castle Management Stock Bonus Plan, and First Federal Savings Bank of New Castle Directors Stock Bonus Plan of First Shenango Bancorp, Inc. of our report dated February 6, 1998, with respect to the consolidated financial statements of First Shenango Bancorp, Inc. incorporated by reference in the Annual Report (Form 10-K) for the year ended December 31, 1997. /s/ Ernst & Young LLP Pittsburgh, Pennsylvania March 24, 1998