Johannes Holtrop1854–
- Name
- Johannes Holtrop
| Birth | estimated as equal to wife's birth year about 1854 |
| Birth of a daughter #1 | Aaltje Holtrop about 1879 (Age 25 years) |
| Family with Baukje Koning |
| himself |
Johannes Holtrop Birth: estimated as equal to wife's birth year — about 1854 |
| wife |
Baukje Koning Birth: estimated a gap of 25 years — about 1854 |
| daughter |
Aaltje Holtrop Birth: about 1879 25 25 — Vledder, Drente, The Netherlands |