1842 - 1909 (~ 66 years)(Notes: You may have to scroll down or right to see chart.)
| Ferdinand Gehrt 1842-1909 |
| Ferdinand Gehrt | |
| B: | May 1842 |
| Germany | |
| D: | 17 Feb 1909 |
| Cook, Illinois, USA | |
Auguste A Krause 1845-1912 |
| Auguste A Krause | |
| B: | 31 Dec 1845 |
| Zajączkówko | |
| D: | 28 Mar 1912 |
| Cook, Illinois, USA | |
