| Name | Role | Place | Source | |
|---|---|---|---|---|
| Constans Jacob Willem Grothe | Registered | 1850 | Maartensdijk, Utrecht | Population register |
| Jacob Constans | Child | 1807 | Zaltbommel | Church records baptisms |
| Jacob Constans | Father | 1822 | 's-Gravenhage | Civil registration deaths |
| Jacob Constans | Witness | 1703 | Rotterdam | Church records baptisms |
| Jacob Constans | Child | 1807 | Zaltbommel | Church records baptisms |
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