[LETTERHEAD OF PRICE WATERHOUSE APPEARS HERE]
 
                                   EXHIBIT 23
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
We hereby consent to the incorporation by reference in the Registration
Statement on Form S-8 (No. 333-11443) of SIS Bancorp, Inc. of our report dated
January 23, 1997 appearing on page 67 of this Form 10-K.
 
/s/ Price Waterhouse LLP

Boston, Massachusetts
March 10, 1997