| Father | Willem Cornelisz Molendijk (1700 - ) |
| Mother | Heiltje Aldertsdr van der Wilt (1705 - ) |
| Sibling | Jacobus Willemsz Molendijk (1733 - 1785) |
| Sibling | Cornelia Meulendijk (1736 - ) |
| Sibling | Cornelia Willemsdr Molendijk (1735 - ) |
| Sibling | Pietertje Willemsdr Molendijk (1736 - ) |
| Sibling | Jacob Meulendijk (1734 - ) |
| Sibling | Cornelia Molendijk ( - ) |
| Sibling | Aaltje Willemsdr Molendijk (1729 - ) |
| Sibling | Pleuntje Willemsdr Molendijk (1740 - 1813) |
| Sibling | Adriana Willemsdr Molendijk (1745 - 1791) |
| Sibling | Pleuntje Willemsdr Molendijk (1726 - 1740) |
| Sibling | Aaltje Willemsdr Molendijk (1725 - ) |