Mary married Hugh Peter McMahon on 2 Sep 1855 in Portage, Columbia County, Wisconsin, United States. Hugh (son of Edward Matthew McMahon and Rose Ann Kirley) was born on 5 Apr 1824 in , , , Ireland; died on 4 Apr 1908 in Fountain Prairie, Columbia, Wisconsin, United States; was buried on 6 Apr 1908 in St. Patrick's Church Cemetery, Doylestown, Columbia, Wisconsin, United States. [Group Sheet] [Family Chart]

1. Anna E. McMahon was born in Jan 1861 in Doylestown, Columbia, Wisconsin, United States; died on 13 Sep 1939 in Kaukauna, Outagamie, Wisconsin, United States; was buried on 16 Sep 1939 in Holy Cross Cemetery, Kaukauna, Outagamie, Wisconsin, United States.
2. Anthony McMahon, Sr. was born on 14 Jan 1861 in Fountain Prairie, Columbia, Wisconsin, United States; died on 1 Aug 1927 in Fountain Prairie, Columbia, Wisconsin, United States; was buried on 1 Aug 1927 in St. Patrick's Church Cemetery, Doylestown, Columbia, Wisconsin, United States.
3. Mary McMahon was born in 1865; and died.
4. William A. McMahon was born on 9 Jun 1875 in Rio, Columbia County, Wisconsin, United States; died on 24 Oct 1948 in Doylestown, Columbia, Wisconsin, United States; was buried on 26 Oct 1948 in St. Patrick's Church Cemetery, Doylestown, Columbia, Wisconsin, United States.