Kinder |
| 1. Opper, Margaret, geb. 4 Okt 1858 |
| 2. Opper, Peter jun., geb. 1860 |
| 3. Opper, Barbara, geb. 24 Mrz 1864, Wisconsin (WI), USA |
| 4. Opper, Mina, geb. 1866 |
| 5. Opper, Henry, geb. 1868 |
| 6. Opper, Johann, geb. 7 Jul 1871 |
| 7. Opper, William Henry, geb. 20 Jul 1874, Potter, Calumet County, Wisconsin (WI), USA |
| 8. Opper, Adam, geb. 1877 |
| 9. Opper, Amanda, geb. 17 Dez 1880, Potter, Calumet County, Wisconsin (WI), USA |
| 10. Opper, Bertha, geb. 1 Mrz 1884, Chilton, Calumet County, Wisconsin (WI), USA |
| 11. Opper, Phillip, geb. 6 Feb 1888, Rantoul, Calumet County, Wisconsin (WI), USA |
|