On 12 Jun 1895 when Mark M. was 29, he married
Mary A. Shannon, daughter of
James Shannon (17 Mar 1850-5 Jun 1915) &
Mary Shannon (2 Feb 1851-4 Oct 1925), in Pittsburgh, Allegheny County, Pennsylvania.
Born on 6 Nov 1873 in Pittsburgh, Allegheny County, Pennsylvania. Mary A. died in Pittsburgh, Allegheny County, Pennsylvania, on 5 Jun 1956; she was 82.
Mary, also called Mollie, Shannon.