| Name | Role | Place | Source | |
|---|---|---|---|---|
| Conradus Colthof | Father | 1796 | Groningen | Church records baptisms |
| Conradus Colthof | Father | 1799 | Groningen | Church records baptisms |
| Conradus Colthof | Witness | 1792 | Groningen | Church records baptisms |
| Conradus Colthof | Father | 1804 | Kerkelijke gemeente Groningen | Church records baptisms |
| Conradus Colthof | Father of bride | 1834 | Groningen | Civil registration marriages |
| Conradus Colthof | Father | 1802 | Groningen | Church records baptisms |
| Conradus Colthof | Father | 1844 | Groningen | Civil registration deaths |
| Conradus Colthof | Father | 1802 | Kerkelijke gemeente Groningen | Church records baptisms |
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