| Name | Role | Place | Source | |
|---|---|---|---|---|
| Claas Gijsbertsz van Leeuwen | Mention | 1740 | Woerden | Notarial records |
| Claas Gijsbertsz van Leeuwen | Mention | 1727 | Woerden | Notarial records |
| Claas Gijsbertsz van Leeuwen | Father | Reeuwijk | Church records burials | |
| Claas Gijsbertsz van Leeuwen | Father | Reeuwijk | Church records burials | |
| Claas Gijsbertsz van Leeuwen | Mention | 1734 | Woerden | Notarial records |
| Claas Gijsbertsz van Leeuwen | Father | 1709 | Woerden | Church records baptisms |
| Claas Gijsbertsz van Leeuwen | Mention | 1740 | Woerden | Notarial records |
| Claas Gijsbertsz van Leeuwen | Deceased | Reeuwijk | Church records burials | |
| Claas Gijsbertsz van Leeuwen | Father | Reeuwijk | Church records burials | |
| Claas Gijsbertsz van Leeuwen | Father | 1709 | Woerden | Church records baptisms |
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