1867 - 1918 (51 jaar)
1886-1887
| Anna Albertina Koster | |
| G: | 17 dec 1886 |
| Haarlem | |
| O: | 21 feb 1887 |
| Haarlem | |
1888-
| Cornelis Johannes Koster | |
| G: | 5 nov 1888 |
| Haarlem | |
1888-
| Elizabeth de Hond | |
| G: | 1888 |
| Amsterdam | |
| H: | 15 jun 1910 |
| Amsterdam | |
1891-1894
| Johannes Koster | |
| G: | 23 aug 1891 |
| Haarlem | |
| O: | 19 sep 1894 |
| Haarlem | |
1893-
| Neeltje Koster | |
| G: | 17 mei 1893 |
| Haarlem | |
1897-
| Carl Friedrich Helms | |
| G: | 1897 |
| Amsterdam | |
| H: | 13 jun 1917 |
| Amsterdam | |
| Anna Albertina Margaretha Koster | |
| G: | 24 jul 1894 |
| Haarlem | |
1893-
| Louis van Walsem | |
| G: | 1893 |
| Amsterdam | |
| H: | 27 jul 1916 |
| Amsterdam | |
|
1867-1918
| Bartholomeus Koster | |
| G: | 26 mei 1867 |
| Haarlem | |
| O: | 4 nov 1918 |
| Bloemendaal | |
1870-
| Neeltje Sundag | |
| G: | 26 jan 1870 |
| Haarlemmerliede | |
| H: | 16 dec 1886 |
| Haarlem | |
