
![]() | Jacob Jan de Koo |
| Jacob Jan de Koo | |
| G: | « 1874 |
| Amsterdam | |
| O: | 16 feb 1946 |
| Laren NH | |
![]() | Cornelia Elisabeth Pel |
| Cornelia Elisabeth Pel | |
| G: | ca. 1850 |
| Drachten | |
| O: | vóór feb 1946 |
![]() | Johannes de Koo |
| Johannes de Koo | |
| G: | ca. 1842 |
| Middelie | |
| H: | 15 feb 1879 |
| Smallingerland | |
| O: | vóór feb 1946 |