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                                                                    EXHIBIT 23.7

                         CONSENT OF ALLEN C. EWING & CO.

         We hereby consent to the inclusion in the Proxy Statement/Prospectus
forming part of this Registration Statement on Form S-4 of F.N.B. Corporation of
our opinion as Exhibit C thereto and to the reference to such opinion and to our
firm therein. We also confirm the accuracy in all material respects of the
description and summary of our analyses, observations, beliefs, and conclusions
relating thereto set forth under the heading "The Merger - Opinion of CCBI's
Financial Advisor" therein. In giving such consent, we do not admit that we come
within the category of persons whose consent is required under Section 7 of the
Securities Act of 1933 and the rules and regulations of the Securities and
Exchange Commission issued thereunder.

                                             ALLEN C. EWING & CO.


                                             /s/ Benjamin C. Bishop, Jr.

                                             Benjamin C. Bishop, Jr.
                                             President

Jacksonville, Florida
February 2, 2001