Children |
| 1. Jacob D. Opp, b. 25 Apr 1870, Odessa, Ukrayina , d. 10 Apr 1961, Eureka, McPherson County, South Dakota, USA (Age 90 years) |
| 2. Daniel Opp, b. 10 Jul 1872, Kassel, Odessa, Ukrayina , d. 16 Dec 1956, Leola, McPherson County, South Dakota, USA (Age 84 years) |
| 3. Katharina Opp, b. 26 Jul 1874, Kassel, Odessa, Ukrayina , d. 10 Apr 1964, Eureka, McPherson County, South Dakota, USA (Age 89 years) |
| 4. Johannes Daniel Opp, b. 3 Feb 1877, Kassel, Odessa, Ukrayina , d. 11 Nov 1953, Eureka, McPherson County, South Dakota, USA (Age 76 years) |
| 5. Christian D. Opp, b. 24 Nov 1881, Kassel, Odessa, Ukrayina , d. 12 Jul 1963, Eureka, McPherson County, South Dakota, USA (Age 81 years) |
| 6. Frederick D. Opp, b. 28 May 1886, Eureka, McPherson County, South Dakota, USA , d. 5 Jan 1975, Eureka, McPherson County, South Dakota, USA (Age 88 years) |
| 7. Henry D. Opp, b. 27 Apr 1888, Eureka, McPherson County, South Dakota, USA , d. 9 Aug 1972, Lodi, San Joaquin County, California, USA (Age 84 years) |
| 8. Rosina Opp, b. 22 Jan 1890, Eureka, McPherson County, South Dakota, USA , d. 1 Sep 1969, Eureka, McPherson County, South Dakota, USA (Age 79 years) |
| 9. Christina Opp, b. 1 Dec 1891, Eureka, McPherson County, South Dakota, USA , d. 0May 1983, Portland, Multnomah County, Oregon, USA (Age 91 years) |
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