| 1. Hilmer L. Opp |
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| B: |
27 Sep 1928 |
| P: |
Mound City, Campbell County, South Dakota, USA |
| D: |
17 Aug 2015 |
| P: |
Richfield, Hennepin County, Minnesota, USA |
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| 2. Jacob D. Opp |
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| B: |
23 Aug 1896 |
| P: |
Eureka, McPherson County, South Dakota, USA |
| M: |
8 Nov 1923 |
| P: |
Eureka, McPherson County, South Dakota, USA |
| D: |
30 Jun 1973 |
| P: |
Eureka, McPherson County, South Dakota, USA |
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| 4. Jacob D. Opp |
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| B: |
25 Apr 1870 |
| P: |
Odessa, Ukrayina |
| M: |
Abt 1892 |
| P: |
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| D: |
10 Apr 1961 |
| P: |
Eureka, McPherson County, South Dakota, USA |
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| 8. Johannes Daniel Opp |
=> |
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| B: |
23 Mar 1842 |
| P: |
Kassel, Odessa, Ukrayina |
| M: |
Abt 1866 |
| P: |
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| D: |
6 Jun 1916 |
| P: |
Eureka, McPherson County, South Dakota, USA |
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| 9. Katharina Gohl |
=> |
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| B: |
5 Apr 1847 |
| P: |
Kassel, Odessa, Ukrayina |
| D: |
16 Mar 1937 |
| P: |
Eureka, McPherson County, South Dakota, USA |
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| 5. Catherina Neuharth |
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| B: |
23 Dec 1874 |
| P: |
Menno, Hutchinson County, South Dakota, USA |
| D: |
2 Apr 1966 |
| P: |
Eureka, McPherson County, South Dakota, USA |
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| 10. Georg Neuhardt Neuharth |
=> |
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| B: |
22 Dec 1838 |
| P: |
Kassel, Odessa, Ukrayina |
| M: |
2 Feb 1864 |
| P: |
Kassel, Odessa, Ukrayina |
| D: |
1904 |
| P: |
Eureka, McPherson County, South Dakota, USA |
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| 11. Elisabetha Rosin |
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| B: |
11 Apr 1839 |
| P: |
Kassel, Odessa, Ukrayina |
| D: |
1916 |
| P: |
Eureka, McPherson County, South Dakota, USA |
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| 3. Frieda Pfeiffer |
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| B: |
12 Feb 1906 |
| P: |
South Dakota, USA |
| D: |
24 Jan 1967 |
| P: |
Eureka, McPherson County, South Dakota, USA |
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1928 - 2015 (86 years)