| Focke (Fokke) Sacharias Mammenga (1770 - 1846) |
|
| Frauke Catharina Janssen (~1770 - 1839) |
| Jan Fokken (Heinderks) Mammenga | Greetje Geerds Valentein7 |
| b. Jan 27, 1804, Wirdum, Ost. Germany d. Feb 8, 1893, Wirdum, Ost. Germany bur. occ. bp. |
b. abt 1804 d. Jun 22, 1859, Wirdum, Ost. Germany bur. occ. bp. |
| Fokke Janssen Mammenga Geerd Janssen Mammenga Daughter Mammenga Catharina Janssen Mammenga |