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Jacob Sijmonsz was born 23 October 1675 in Onderdijk, North Holland, Netherlands to Simon Laurentsz (1653-1728) and Divera Teunis (-c1700) and died 14 October 1735 Onderdijk, North Holland, Netherlands of unspecified causes. He married Anna Snijer (c1675-) 22 November 1699 in Wervershoof, North Holland, Netherlands. He married Dieuwertje Jacobs (-) February 1713 in Medemblik, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Simon Weel (1700-1739) | 23 October 1700 Onderdijk, North Holland, Netherlands | 2 May 1739 Neuvel, Wervershoof, North Holland, Netherlands | Maartje Meijnderts (-1732) Aaltje Sijmens (1715-1743) |
| Margaretha Weel (1702-) | |||
| Debora Weel (1704-) | |||
| Arien Weel (1706-1748) | 17 February 1706 Wervershoof, North Holland, Netherlands | 8 March 1748 Onderdijk, North Holland, Netherlands | Anna Willems (1705-1776) |
| Aaltje Weel (1708-) | |||
| Jacob Weel (1708-) | 11 September 1708 | Geertje Claas (-) Geertje Cornelis (-) | |
| Divera Weel (1709-) | |||
| Cornelis Weel (1712-) | |||
| Name | Birth | Death | Joined with |
| Divera Weel (1714-) | |||
| Divera Weel (1715-) | |||
| Gerarda Weel (1717-) | |||
| Jacobus Weel (1719-) | |||
Footnotes (including sources)
| ‡ General |
| Ω Birth |
| ₪ Wedding |
| ¶ Death |