1925 - 2015 (89 years)
| | Arnold Paul Ladehoff |  | | B: | 2 Mar 1886 | | P: | Cleona Township, Iowa | | M: | 28 Jan 1913 | | P: | Davenport, Scott, Iowa | | D: | 30 Nov 1959 | | P: | Davenport, Scott, Iowa, USA |
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| Olga Hilda Mumm | | | B: | 3 Jul 1888 | | P: | Davenport, Iowa | | D: | Jun 1953 | | P: | Davenport, Scott, Iowa, USA |
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