(Notes: You may have to scroll down or right to see chart.)
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| Gerardus Willeesen | |
| B: | cir 1702 |
| Wyler, Kranenburg, Nordrhein-Westfalen, Germany | |
| D: | 30 Jun 1750 |
| Wyler, Kranenburg, Nordrhein-Westfalen, Germany | |
| Catharina Vellmans | |
| B: | cir 1704 |
| Germany | |
| D: | 22 Feb 1750 |
| Wyler, Kranenburg, Nordrhein-Westfalen, Germany | |