| Name | Role | Place | Source | |
|---|---|---|---|---|
| Erven Willem Dirksz Wit de oude echtgenoot Marretje Hartloop | Seller | 1750 | Amsterdam | Waivers |
| Erven Willem Dirksz de Witt echtgenoot Marretje Hartloop | Seller | 1756 | Amsterdam | Waivers |
| Willem Hartloop | Registered | 1743 | Amsterdam | Notarial records |
| Willem Hartloop | Registered | 1747 | Amsterdam | Notarial records |
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