
| Willem Gommert Koster | |
| G: | 6 feb 1934 |
| Oosterbeek,GE,NLD | |
| O: | 12 dec 1994 |
| Oosterwolde,FR,NLD | |
|
| Pieternella Vette | |
| G: | 3 mrt 1908 |
| Rilland-Bath,ZE,NLD | |
| O: | 19 nov 2002 |
| Groningen,GR,NLD | |
| Jurjen Koster | |
| G: | 13 mei 1909 |
| Loppersum,GR,NLD | |
| H: | 22 feb 1933 |
| Arnhem,GE,NLD | |
| O: | 24 dec 1995 |
| Groningen,GR,NLD | |