Mary married James P. McMahon on 19 Oct 1853. James (son of Edward Matthew McMahon and Rose Ann Kirley) was born on 28 Dec 1823 in , , , Ireland; died on 19 Mar 1882 in Doylestown, Columbia, Wisconsin, United States. [Group Sheet] [Family Chart]

1. James P. McMahon was born on 29 Mar 1854 in , , New York, United States; died in 1881 in Doylestown, Columbia, Wisconsin, United States.
2. Rose Ann McMahon was born in 1855 in , , Wisconsin, United States; and died.
3. Mary J. McMahon was born in 1857 in , , Wisconsin, United States; and died.
4. Peter McMahon was born in 1858 in , , Wisconsin, United States; and died.
5. Hugh McMahon was born on 2 Jun 1860 in , , Wisconsin, United States; died on 24 Mar 1927.