| Name | Role | Place | Source | |
|---|---|---|---|---|
| Erven Jan Isacqsz Metselaar | Seller | 1728 | Amsterdam | Waivers |
| Jan Isacqsz | Witness | 1716 | Amsterdam | Church records baptisms |
| Jan Isacqsz | Witness | 1716 | Amsterdam | Church records baptisms |
| Jan Isacqsz | Registered | 1700 | Amsterdam | Church records burials |
| Jan Isacqsz Welsing | Registered | 1684 | Amsterdam | Notarial records |
| Jan Isacqsz Welsingh | Registered | 1707 | Amsterdam | Notarial records |
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