| Name | Role | Place | Source | |
|---|---|---|---|---|
| Frederik Cornelisz de Groet | Father | 1655 | Leiden | |
| Frederik Cornelisz de Groet | Father | 1651 | Leiden | |
| Frederik Groet | Person in notarial deed | 1897 | Hoogkarspel | Notarial records |
| Frederik de Groet | Father | 1685 | Leiden | |
| Walter Douglas Frederik Groet | Registered | 1913 | 's-Gravenhage | Population register |
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