John McMahon worked as “Teamster” in 1910 (industry “Grocery House”). He lived at 23 Pendleton St in Cortland in 1910. He shared a census household with Jonna McMahon in 1910.
Census sources: 1910 census, 1910: Jonna McMahon
| Born | About 1889 |
|---|---|
| Race | White |
| Sex | Male |
| Person ID | 7876 |