| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jan Simons Werkman | Father | 1811 | Middelstum en Toornwerd | Church records baptisms |
| Jan Simons Werkman | Father | 1808 | Middelstum en Toornwerd | Church records baptisms |
| Jan Simons Werkman | Father | 1848 | Den Andel | Civil registration births |
| Jan Simons Werkman | Father | 1861 | Den Andel | Civil registration deaths |
| Jan Simons Werkman | Father | 1847 | Den Andel | Civil registration deaths |
| Jan Simons Werkman | Father | 1812 | Middelstum | Civil registration deaths |
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