POWER OF ATTORNEY



	Know all by these presents, that the
undersigned hereby constitutes and appoints each of Richard A. Lammert,
Esq. and Brian R. Yoshida, Esq., signing singly, the undersigned's true and
lawful attorney-in-fact to:

(1)	execute for and on behalf of the
undersigned, in the undersigned's capacity as an officer, director or
affiliate of M&T Bank Corporation (the "Company"), Forms 3, 4, and 5 in
accordance with Section 16(a) of the Securities Exchange Act of 1934 and
the rules thereunder; and

(2)	do and perform any and all acts for and
on behalf of the undersigned which may be necessary or desirable to
complete and execute any such Form 3, 4, or 5, complete and execute any
amendment or amendments thereto, and file such form with the United States
Securities and Exchange Commission and any stock exchange or similar
authority.

	   The undersigned hereby grants to each such
attorney-in-fact full power and authority to do and perform any and every
act and thing whatsoever requisite, necessary, or proper to be done in the
exercise of any of the rights and powers herein granted, as fully to all
intents and purposes as the undersigned might or could do if personally
present, with full power of substitution or revocation, hereby ratifying
and confirming all that such attorney-in-fact, or such attorney-in-fact's
substitute or substitutes, shall lawfully do or cause to be done by virtue
of this power of attorney and the rights and powers herein granted.  The
undersigned acknowledges that the foregoing attorneys-in-fact, in serving
in such capacity at the request of the undersigned, are not assuming, nor
is the Company assuming, any of the undersigned's responsibilities to
comply with Section 16 of the Securities Exchange Act of 1934.

	This
Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to
the undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

	IN WITNESS WHEREOF, the
undersigned has caused this Power of Attorney to be executed as of this
18th day of December, 2003.





									  /s/
Stephen J. Braunscheidel