Montgomery married Eliza Jane Wilson. (Eliza Jane Wilson was born on 18 Sep 1839 in Pittsburgh, Allegheny, PA,1 3 died on 11 Jan 1903 in Pittsburgh, Allegheny, PA 3 and was buried in Imperial: Valley Cemetery, Allegheny, PA 3.)
1 Ancestry.com, Pennsylvania, Death Certificates, 1906-1966 (Original data: Pennsylvania (State). Death certificates, 1906–1966. Series 11.90 (1,905 cartons). Records of the Pennsylvania Department of Health, Record Group 11. Pennsylvania Historical and Museum Commission, Harrisburg, Pennsylvania.), Death Certificate 37384. William J. Gordon. Father Montgomery Gordon. Mother Eliza Jane Wilson. Spouse Mary Beecher.
2 Find A Grave, http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=97687872.
3 Find A Grave, http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=97687087.