1 EXHIBIT 23.6 CONSENT OF OSTROWSKI & COMPANY, INC. November 2, 1998 Ostrowski & Company, Inc. hereby consents to the inclusion of its fairness opinion dated November 2, 1998 (the "Opinion") in the Registration Statement of Westbank Corporation and Amendment Number 1 thereto (the "Registration Statement"). In addition, Ostrowski & Company, Inc. also consents to the inclusion of the related discussion of the Opinion in the Registration Statement. /s/ Ostrowski & Company, Inc. OSTROWSKI & COMPANY, INC.