| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jan Welevelt | Employee | 1705 | Amsterdam | Personnel-administration |
| Jan Welevelt | Registered | 1739 | Amsterdam | Notarial records |
| Jan Welevelt | Groom | 1705 | Amsterdam | Register of notices of marriage |
| Jan van Welevelt | Witness | 1730 | Amsterdam | Church records baptisms |
| Jan van Welevelt | Witness | 1730 | Amsterdam | Church records baptisms |
| Jan van Welevelt tot Diepenbroeck | Witness | 1651 | Bredevoort | Church records baptisms |
| Jan van Welevelt tot Diepenbroeck | Witness | 1651 | Bredevoort | Church records baptisms |
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