Children |
| 1. Katharina Opp, b. 11 Nov 1893, Eureka, McPherson County, South Dakota, USA , d. 29 Jul 1990, South Dakota, USA (Age 96 years) |
+ | 2. Elizabeth Opp, b. 8 Apr 1895, Eureka, McPherson County, South Dakota, USA , d. 3 Dec 1950, Aberdeen, Brown County, South Dakota, USA (Age 55 years) |
| 3. Jacob D. Opp, b. 23 Aug 1896, Eureka, McPherson County, South Dakota, USA , d. 30 Jun 1973, Eureka, McPherson County, South Dakota, USA (Age 76 years) |
| 4. Christina Opp, b. 9 Jul 1901, Eureka, McPherson County, South Dakota, USA |
| 5. Rosa Opp, b. 19 Aug 1903, Eureka, McPherson County, South Dakota, USA , d. 10 Dec 1985, Eureka, McPherson County, South Dakota, USA (Age 82 years) |
| 6. Ida Opp, b. 8 May 1905, Eureka, McPherson County, South Dakota, USA |
| 7. August Opp, b. 28 Aug 1907, Eureka, McPherson County, South Dakota, USA |
+ | 8. Martha Opp, b. 28 Jun 1910, Eureka, McPherson County, South Dakota, USA , d. 8 Aug 2002, Rapid City, Pennington County, South Dakota, USA (Age 92 years) |
| 9. Erna Opp, b. 25 Mar 1912, South Dakota, USA , d. 21 Feb 2003, Eureka, McPherson County, South Dakota, USA (Age 90 years) |
| 10. Eugene Opp, b. 23 Aug 1915, Eureka, McPherson County, South Dakota, USA , d. 21 Dec 1991, Aberdeen, Brown County, South Dakota, USA (Age 76 years) |
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