| Father | Date of Birth | Mother | Date of Birth |
|---|---|---|---|
Isaac Theodorus van 't Hoff |
13-12-1830 | Josephine Johanna Hakman |
18-06-1832 |
| Partner | Date of Birth | Children |
|---|---|---|
Johannes Cornelis Kok |
1861 | Leonarda Maria Petronella Kok |
| Event Type | Date | Place | Description |
|---|---|---|---|
Birth |
05-09-1863 | Rotterdam, Zuid-Holland, Nederland |
| Description |
|---|
Geboorte Justina Johanna van 't Hoff 1863 |