| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jean Nicolas Velthuijs | Child | 1785 | Amsterdam | Church records baptisms |
| Jean Nicolas Velthuijs | Child | 1785 | Amsterdam | Church records baptisms |
| Jean Velthuijs | Registered | 1730 | Amsterdam | Notarial records |
| Jean Velthuijs | Registered | 1732 | Amsterdam | Notarial records |
| Jean Velthuijs | Registered | 1730 | Amsterdam | Notarial records |
| Jean Velthuijs | Registered | 1732 | Amsterdam | Notarial records |
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