(Notes: You may have to scroll down or right to see chart.)
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| Bernhard Robert Fritz Jahn |
| Bernhard Robert Fritz Jahn | |
| B: | 13 Sep 1898 |
| Charter Oak, Crawford, Iowa, USA | |
| D: | 27 Nov 1984 |
| Sioux City, Woodbury, Iowa, USA | |
| Lydia Anna Ullrich |
| Lydia Anna Ullrich | |
| B: | 5 Aug 1900 |
| Charter Oak, Crawford, Iowa, USA | |
| D: | 9 Jan 1969 |
| Sioux City, Woodbury, Iowa, USA | |