| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jan Mathijs Willemsen | Groom | 1703 | Sneek | Church records marriages |
| Jan Mathijs Willemsen | Groom | 1703 | Sneek | Church records marriages |
| Jan Mathijs Willemsen | Groom | 1705 | Sneek | Church records marriages |
| Jan Mathijs Willemsen | Groom | 1703 | Sneek | Church records marriages |
| Jan Mathijs Willemsen | Groom | 1705 | Sneek | Church records marriages |
| Jan Willems Mathijs Willemsen | Registered | 's-Hertogenbosch | Loan Register | |
| Mathijs Jan Willemsen | Baptized | 1655 | Willemstad | Church records baptisms |
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