1884-1960
| Jennie McMahon | |
| B: | 7 Sep 1884 |
| D: | 1960 |
1885-1971
| Robert Emmett McMahon | |
| B: | 30 Dec 1885 |
| Minneapolis, Hennepin, Minnesota, United States | |
| D: | 27 Dec 1971 |
| Wyocena, Columbia County, Wisconsin, United States | |
-1950
| Anna Laura Johnson | |
| M: | 1913 |
| , , New York, United States | |
| D: | 6 Sep 1950 |
1886-Yes, date unknown
| Julian McMahon | |
| B: | 29 Mar 1886 |
| , , Wisconsin, United States | |
| D: | Yes, date unknown |
-1966
| Kenneth Erickson | |
| D: | 1966 |
| Billings, Yellowstone, Montana, United States | |
1888-1960
| Cathrine McMahon | |
| B: | 26 Mar 1888 |
| Fountain Prairie, Columbia, Wisconsin, United States | |
| D: | 1960 |
| Billings, Yellowstone, Montana, United States | |
1890-Yes, date unknown
| Phillip Hugh McMahon | |
| B: | 11 Dec 1890 |
| D: | Yes, date unknown |
1916-1987
| LeRoy J. McMahon | |
| B: | 24 Mar 1916 |
| D: | 9 Feb 1987 |
| St. Paul, Ramsey County, Minnesota, United States | |
1915-1992
| Norma Anderson | |
| B: | 30 Jan 1915 |
| D: | 16 Jan 1992 |
| St. Paul, Ramsey County, Minnesota, United States | |
1921-1996
| Joanne Estelle McMahon | |
| B: | 17 Jan 1921 |
| Doylestown, Columbia, Wisconsin, United States | |
| D: | 7 Sep 1996 |
| Robert James Postel | |
| M: | 7 Oct 1948 |
| Madison, Dane County, Wisconsin, United States | |
1892-1946
| Anthony Patrick McMahon | |
| B: | 8 Apr 1892 |
| Doylestown, Columbia, Wisconsin, United States | |
| D: | 4 May 1946 |
1898-1991
| Nettie M. Field | |
| B: | 25 Feb 1898 |
| M: | 8 Feb 1915 |
| D: | 11 Jan 1991 |
| , Columbia, Wisconsin, United States | |
1864-1935
| Annie M. Kirley | |
| B: | May 1864 |
| , , , Ireland | |
| D: | 7 Nov 1935 |
| Doylestown, Columbia, Wisconsin, United States | |
1861-1927
| Anthony McMahon, Sr. | |
| B: | 14 Jan 1861 |
| Fountain Prairie, Columbia, Wisconsin, United States | |
| M: | 8 Nov 1883 |
| D: | 1 Aug 1927 |
| Fountain Prairie, Columbia, Wisconsin, United States | |