John married Mary Ann G R Byrnes in 1851 in Fond du Lac, Wisconsin, USA. Mary was born on 9 Apr 1836 in Boston, Middlesex County, Massachusetts, USA; died on 13 May 1910 in Eau Claire, Wisconsin, USA. [Group Sheet] [Family Chart]

1. Emmet McGrath
2. Capt. Hugh Jocelyn McGrath was born on 8 Apr 1858 in Fond du Lac, Wisconsin, USA; died on 7 Nov 1899 in Manila, Philippines; was buried in Washington, District of Columbia, USA.
3. Jessie McGrath was born on 6 Jul 1875 in Eau Claire, Wisconsin, USA; died on 17 Oct 1958 in Eau Claire, Wisconsin, USA.