| Male Jan Geerts Koster |
| Birth | 13 Oct 1811 | Zuidwolde |
| Death | 19 Jun 1878 | Hoogeveen |
| Burial | ||
| Marriage | 2 Mar 1839 | Hoogeveen |
| Father | Geert Jans Koster | F4786 Group Sheet | |
| Mother | Hillechien Willems Scheper | F4786 Group Sheet | |
| Female Aaltje Prins |
| Birth | 11 Nov 1816 | Hoogeveen |
| Death | 3 Jan 1898 | Hoogeveen |
| Burial | ||
| Father | Gerrit Hendriks Prins | F4787 Group Sheet | |
| Mother | Jentien Hendriks Bloemhof (Kroes) | F4787 Group Sheet | |
+ Gerrit Koster |
| Birth | Abt 1843 | Hoogeveen |
| Death | 12 Sep 1929 | Emmen |
| Burial | ||
| Spouse | Johanna Hendriks Kamperman | F4735 | |
| Marriage | ||