IJsbrandt Pietersz Laan was born 4 September 1652 in Krimpen to Pieter Laan (c1620-bef1686) and Trijntje Jans (c1625-bef1687) and died 2 October 1719 Wervershoof of unspecified causes. He married Eth Louwes (1657-1727) 22 January 1686 in Wervershoof.
Children
| Name | Birth | Death | Joined with |
| Laurentius Laan (1686-bef1697) | |||
| Catharina Laan(1688-bef1690) | |||
| Trijn Laan (1690-aft1730) | 30 January 1690 Driehuizen, North Holland, Netherlands | 1730 | Pieter Olfertsz (1693-1730) |
| Dieuwer Laan (1692-bef1727) | |||
| Laurentius Laan (1697-?) | |||
Footnotes (including sources)
| ‡ General |