1776 - 1834 (58 jaar)
| Samuel Koster | |
| G: | 1 nov 1876 |
| Ruischerbrug, Groningen | |
| O: | 31 okt 1918 |
| Dennenoord, Drenthe | |
| Grietje Post | |
| G: | 26 nov 1879 |
| Ten Post | |
| H: | 20 okt 1901 |
| Groningen | |
| O: | 20 apr 1953 |
| Groningen | |
| Feiko Koster | |
| G: | 17 jun 1851 |
| Hoogezand | |
| Meike Meihuizen | |
| G: | 1853 |
| Martenshoek | |
| H: | 15 mei 1875 |
| Hoogezand | |
| Aaldrik Kornelis Koster | |
| G: | 11 okt 1823 |
| Scheemda | |
| O: | 21 feb 1896 |
| Sappemeer | |
| Annechien Stuitje | |
| G: | 1824 |
| Nieuwolda | |
| H: | 14 jan 1848 |
| Hoogezand | |
|
| Kornelius Aaldriks Koster | |
| G: | 1776 |
| Winschoten | |
| O: | 6 apr 1834 |
| Scheemda | |
| Trijntje Aalderiks Stijkel | |
| G: | 1788 |
| Scheemda | |
| H: | 15 feb 1807 |
| Scheemda | |
| O: | 25 aug 1862 |
| Scheemda | |
