Sijtje Laan was born 23 December 1785 in Wervershoof to Ewoud Laan (1744-1809) and Aagje Rood (1765-1838) and died 13 June 1847 Wervershoof of unspecified causes. She married Cornelis Commandeur (1778-1849) 12 April 1807 in Wervershoof.
Children
| Name | Birth | Death | Joined with |
| Pieter Commandeur (1808-bef1810) | |||
| Pieter Commandeur (1810-1826) | |||
| Ewoud Commandeur (1812-) | |||
| Geertje Commandeur (1814-1853) | |||
| Aagje Commandeur (c1816-1891) | |||
| Jan Commandeur (c1818-1844) | |||
| Dieuwertje Commandeur (1821-1884) | 14 April 1821 Wervershoof, North Holland, Netherlands | 5 July 1884 Venhuizen, North Holland, Netherlands | Klaas Tol (1815-1859) |
| Cornelis Commandeur (c1824-1900) | |||
| Klaas Commandeur (c1825-1859) | |||
| Trijntje Commandeur (c1826-1881) | |||
| Pieter Commandeur (c1830-1896) | |||
Footnotes (including sources)
| ‡ General |