1876-Yes, date unknown
| William B. McMahon | |
| B: | 1876 |
| D: | Yes, date unknown |
1854-1881
| James P. McMahon | |
| B: | 29 Mar 1854 |
| , , New York, United States | |
| D: | 1881 |
| Doylestown, Columbia, Wisconsin, United States | |
| Elizabeth C. Devine | |
| M: | 31 Dec 1875 |
| , Columbia, Wisconsin, United States | |
1855-Yes, date unknown
| Rose Ann McMahon | |
| B: | 1855 |
| , , Wisconsin, United States | |
| D: | Yes, date unknown |
1857-Yes, date unknown
| Mary J. McMahon | |
| B: | 1857 |
| , , Wisconsin, United States | |
| D: | Yes, date unknown |
1858-Yes, date unknown
| Peter McMahon | |
| B: | 1858 |
| , , Wisconsin, United States | |
| D: | Yes, date unknown |
1860-1927
| Hugh McMahon | |
| B: | 2 Jun 1860 |
| , , Wisconsin, United States | |
| D: | 24 Mar 1927 |
| Anna McGuckin | |
| M: | 4 Aug 1908 |
| , Columbia, Wisconsin, United States | |
1830-Yes, date unknown
| Mary McMahon | |
| B: | 1830 |
| , , , Ireland | |
| D: | Yes, date unknown |
1823-1882
| James P. McMahon | |
| B: | 28 Dec 1823 |
| , , , Ireland | |
| M: | 19 Oct 1853 |
| D: | 19 Mar 1882 |
| Doylestown, Columbia, Wisconsin, United States | |