| Name | Role | Place | Source | |
|---|---|---|---|---|
| Frederik Jacob de Groot | Registered | 1853 | Amsterdam | Population register |
| Frederik Jacob de Groot | Registered | 1853 | Amsterdam | Population register |
| Frederik Jacob de Groot | Registered | 1830 | Amsterdam | Population register |
| Frederik Jacob de Groot | Registered | 1830 | Amsterdam | Population register |
| Frederik Jacob de Groot | Partner | 1939 | Alkmaar | Civil registration deaths |
| Frederik Jacob de Groot | Partner | 1939 | Alkmaar | Civil registration deaths |
| Johan Jacob Frederik de Groot | Witness | 1862 | 's-Gravenhage | Civil registration marriages |
| Johan Jacob Frederik de Groot | Witness | 1862 | 's-Gravenhage | Civil registration marriages |
| Johann Jacob Frederik de Groot | Registered | 's-Gravenhage | Studbooks |
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