CONFIRMING STATEMENT


	This Statement confirms that the undersigned has authorized and designated
Richard R. Grinnan, Anne G. Waleski, Karl M. Strait, Anna M. King, or Donna L.
Strauss (each an "Authorized Signer") to execute and file (in any permitted
format) on the undersigned's behalf all Forms 3, 4 and 5 (including any
amendments thereto) that the undersigned may be required to file with the United
States Securities and Exchange Commission as a result of the undersigned's
ownership of, or transactions in, securities of Markel Corporation.  Any such
previous authorization is hereby revoked.  Each Authorized Signer is authorized
to obtain CIK and EDGAR access codes and take all such other actions as may be
necessary or desirable to permit electronic filings of such forms.  The
authority of each Authorized Signer under this Statement shall continue until
the undersigned is no longer required to file Forms 3, 4 or 5 with regard to the
undersigned's ownership of, or transactions in, securities of Markel
Corporation, unless earlier revoked in writing.  The undersigned acknowledges
that none of the Authorized Signers or Markel Corporation is assuming any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934.

Date:  February 24, 2015


							/s/ Lemuel E. Lewis
							Signature

							Lemuel E. Lewis
							Printed Name