Jacob Cornelisz ("Molitor") Molenaar was born 23 January 1653 in Zwaagdijk, Wervershoof, North Holland, Netherlands to Cornelis Ariensz (-) and Etje Alberts (-) and died 31 October 1729 Wervershoof, North Holland, Netherlands of unspecified causes. He married Neeltje Pieters (-aft1730) 12 November 1785 in Wervershoof, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Pieter Molenaar (1686-bef1728) | |||
| Cornelis Jacobsz (1688-) | |||
| Aafje Jacobs (1690-) | |||
| Etje Jacobs (1692-) | |||
| Louw Bakker (1695-c1729) | |||
| Albert Molenaar (1697-1775) | |||
| Maarten Koster (1699-1773) | 2 November 1699 Wervershoof, North Holland, Netherlands | 2 February 1773 Hoogkarspel, North Holland, Netherlands | Vrouwtje Crelis (-1735) Soutje Jacobs (-) |
| Jan Jacobsz (1701-) | |||
| Willem Jacobsz (1704-) | |||
Siblings