| Name | Role | Place | Source | |
|---|---|---|---|---|
| Matthijs Jacob Koster | Witness | 1791 | Amsterdam | Church records baptisms |
| Matthijs Jacob Koster | Witness | 1799 | Amsterdam | Church records baptisms |
| Matthijs Jacob Koster | Witness | 1798 | Amsterdam | Church records baptisms |
| Matthijs Jacob Koster | Witness | 1799 | Amsterdam | Church records baptisms |
| Matthijs Jacob Koster | Registered | 1794 | Amsterdam | Notarial records |
| Matthijs Jacob Koster | Registered | 1794 | Amsterdam | Notarial records |
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