| Jan Fokken (Heinderks) Mammenga (1804 - 1893) |
Heinrich Hermann Rosenberg (1816 - <1861) |
| Greetje Geerds Valentein (~1804 - 1859) |
Friederica Dorothea Wilhelmine Busch (~1812 - 1862) |
| Fokke Janssen Mammenga | Wilhelmine George Gesine Hermine Rosenberg |
| b. Oct 26, 1837, Wirdum, Ost. Germany d. Dec 9, 1914, Wirdum, Ost. Germany bur. Dec 13, 1914, Wirdum, Ost. Germany occ. Arbeiter bp. |
b. Dec 15, 1840, Walle, Parochie Aurich, Germany d. bur. occ. Farmers Servant bp. |