Geert Witkop1849–
- Name
- Geert Witkop
| Birth | estimated as equal to wife's birth year about 1849 |
| Birth of a son #1 | Marten Witkop 1874 (Age 25 years) |
| Family with Willemke Poelma |
| himself |
Geert Witkop Birth: estimated as equal to wife's birth year — about 1849 |
| wife |
Willemke Poelma Birth: estimated a gap of 25 years — about 1849 |
| son |
Marten Witkop Birth: computed by Gio — 1874 25 25 |