| Fred John Mandelkow(1891 - 1965) | |
| Susan Driscoll(1893 - 1964) |
| John Ernest Nelson | Betty Dolores Mandelkow (Private) |
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b. 13 Apr 1920, Billings, Yellowstone Co, MT
d. 16 Jun 1978, Billings, Yellowstone Co, MT, age: 58
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