| Name | Role | Place | Source | |
|---|---|---|---|---|
| Adolph Siewers | Witness | 1775 | Amsterdam | Church records baptisms |
| Adolph Siewers | Father | 1769 | Amsterdam | Church records baptisms |
| Adolph Siewers | Father | 1769 | Amsterdam | Church records baptisms |
| Jan Adolph Siewers | Registered | 1759 | Amsterdam | Notarial records |
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