| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jacobus Jenser | Registered | 1737 | Amsterdam | Notarial records |
| Jacobus Jenser | Registered | 1744 | Amsterdam | Notarial records |
| Jacobus Jenser | Witness | 1722 | Amsterdam | Church records baptisms |
| Jacobus Jenser | Witness | 1722 | Amsterdam | Church records baptisms |
| Jacobus Jenser | Registered | 1719 | Amsterdam | Notarial records |
| Jacobus Jenser | Registered | 1718 | Amsterdam | Notarial records |
| Jacobus Jenser | Witness | 1717 | Amsterdam | Church records baptisms |
| Jacobus Jenser | Witness | 1717 | Amsterdam | Church records baptisms |
| Jenser / Jacobus | Registered | Amsterdam | Notarial records |
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