| Name | Role | Place | Source | |
|---|---|---|---|---|
| Joanna Maria W de Groot | Mother | 1769 | Nuenen | Church records baptisms |
| Joanna Maria W de Groot | Mother | 1769 | Nuenen | Church records baptisms |
| Maria W. de Groot | Registered | 1879 | 's-Hertogenbosch | Population register |
| Maria W. de Groot | Registered | Apeldoorn | Population register |
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