| Simon Douwe Posthuma |
| Simon Douwe Posthuma | |
| G: | 1 feb 1939 |
| Zaandam | |
| O: | 28 feb 2020 |
| Amsterdam | |
| Onbekend |
| Douwe Posthuma |
| Douwe Posthuma | |
| G: | 26 okt 1910 |
| Makkum | |
| O: | 25 jan 1972 |
| Lisse | |
| Dirkje Johanna de Witte |
| Dirkje Johanna de Witte | |
| G: | 12 dec 1911 |
| Idsegahuizen | |
| H: | 27 apr 1932 |
| Wonseradeel | |
| O: | 11 dec 1992 |
| Zaanstad | |
| Symon Posthuma |
| Symon Posthuma | |
| G: | 30 nov 1875 |
| Makkum | |
| O: | 11 mrt 1955 |
| Sneek | |
| Wypkje Kramer |
| Wypkje Kramer | |
| G: | 28 nov 1873 |
| Exmorra | |
| H: | 19 mei 1900 |
| Wonseradeel | |
| O: | 21 jun 1932 |
| Wonseradeel | |
|
| Teetske Westerbaan |
| Teetske Westerbaan | |
| G: | 29 aug 1836 |
| Sneek | |
| O: | 18 sep 1904 |
| Makkum | |
| Siete Posthuma |
| Siete Posthuma | |
| G: | 13 feb 1840 |
| Makkum | |
| H: | 13 mei 1865 |
| Wonseradeel | |
| O: | 19 sep 1880 |
| Makkum | |