| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jan Aartz Leendertz van Leeuwen | Father | 1737 | Bodegraven | Church records baptisms |
| Jan Leendertz van Leeuwen | Mention | 1804 | Reeuwijk | Notarial records |
| Jan Leendertz van Leeuwen | Deceased | 1772 | Leiderdorp |
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