| Albert Johannes Boonstra |
| Albert Johannes Boonstra | |
| G: | 1900 |
| O: | Ja, datum echter onbekend |
| Martentje Gosses Jansma |
| Martentje Gosses Jansma | |
| G: | 3 apr 1871 |
| Beetsterzwaag | |
| O: | 1941 |
| Johannes Alberts Boonstra |
| Johannes Alberts Boonstra | |
| G: | 3 sep 1870 |
| Ureterp | |
| H: | 26 mei 1899 |
| Opsterland | |
| O: | 1925 |