| 1. Clarence Leroy Grossen |
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| B: |
17 Feb 1911 |
| P: |
, Imperial County, California, USA |
| D: |
15 Dec 1978 |
| P: |
Redding, Shasta County, California, USA |
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| 2. Johannes "John" Edward Grossen |
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| B: |
12 Dec 1876 |
| P: |
Frutigen, Bern, , Switzerland |
| M: |
18 Nov 1904 |
| P: |
Billings, Yellowstone County, Montana, USA |
| D: |
19 Apr 1942 |
| P: |
, Siskiyou County, California, USA |
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| 3. Clara Isabel Staack |
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| B: |
Jul 1886 |
| P: |
Minneapolis, Hennepin County, Minnesota, USA |
| D: |
19 Mar 1971 |
| P: |
Fremont, Alameda County, California, USA |
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| 6. Gustavus A. Staack |
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| B: |
Dec 1855 |
| P: |
, , Minnesota, USA |
| M: |
1 Jan 1880 |
| P: |
Waseca, Waseca County, Minnesota, USA |
| D: |
18 Nov 1901 |
| P: |
Minneapolis, Hennepin County, Minnesota, USA |
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| 12. Mathias Staack |
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| B: |
16 Jun 1826 |
| P: |
Süderhastedt, Dithmarschen District, Schleswig-Holstein, Denmark |
| M: |
5 Dec 1855 |
| P: |
Camanche, Clinton County, Iowa, USA |
| D: |
4 May 1917 |
| P: |
Winona, Winona County, Minnesota, USA |
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| 13. Mary Peterson |
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| B: |
26 Jul 1836 |
| P: |
, , , Germany |
| D: |
9 Sep 1930 |
| P: |
Seattle, King County, Washington, USA |
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| 7. Sarah Isabel Grover |
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| B: |
23 Mar 1861 |
| P: |
, , Minnesota, USA |
| D: |
28 Jun 1928 |
| P: |
, Sutter County, California, USA |
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1911 - 1978 (67 years)