| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jan de Neff | Registered | 1749 | Amsterdam | Notarial records |
| Jan de Neff | Registered | 1749 | Amsterdam | Notarial records |
| Jan de Neff | Registered | 1745 | Amsterdam | Notarial records |
| Jan de Neff | Child | 1604 | Leiden | |
| Jan de Neff | Child | 1603 | Leiden | |
| Jan van de Neff | Registered | 1593 | Dordrecht | Church records marriages |
| Jan van de Neff | Registered | 1593 | Dordrecht | Church records marriages |
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