1877-1954
| Antonia Francisca Koster | |
| G: | 12 dec 1877 |
| Zoeterwoude | |
| O: | 28 nov 1954 |
| 's-Gravenhage | |
| Jan Hendrik Bakhuis Roozeboom | |
| G: | 12 dec 1880 |
| Leiden | |
1912-
| Cornelia Koster | |
| G: | 6 apr 1912 |
1913-
| Willem Jan Pieter Koster | |
| G: | 27 mei 1913 |
1885-1953
| Willem Jan Pieter Koster | |
| G: | 15 aug 1885 |
| 's-Gravenhage | |
| O: | 9 okt 1953 |
| Voorburg | |
| Cornelia van Heijningen | |
| H: | 2 dec 1911 |
|
1844-1888
| Antonetta Francina Elisabeth de Wit | |
| G: | 1844 |
| O: | 26 okt 1888 |
| 's-Gravenhage | |
| Gerrit Koster | |
| H: | 7 mrt 1877 |
| 's-Gravenhage | |