| Father | Ernst Hahn (b. about 1819, d. 1896) |
| Mother | Louisa Hecht (b. about 1824, d. 12 March 1894) |
| Birth | about 1845 | Mary Hahn was born about 1845 in Prussia. |
| Witness | 19 May 1852 | Mary Hahn witnessed the immigration of Ernst Hahn on 19 May 1852 in United States.1 |
| Witness | June 1860 | She appeared on the census of in June 1860 in the household of Ernst Hahn and Louisa Hecht in Hazel Green, Grant, Wisconsin, United States. |
| Last Edited | 31 January 2019 |