Simon Claase Jonker was born 1781 in Lutjebroek, North Holland, Netherlands to Klaas Jonker (1739-1794) and Antje Broersen (1743-1815) and died 20 July 1846 Grootebroek, North Holland, Netherlands of unspecified causes. He married Marijtje Schaper (1784-) 1 January 1805 in Bovenkarspel, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Antje Jonker (c1806-1860) | |||
| Claas Jonker (c1809) | |||
| Marijtje Jonker (1812-1877) | 23 October 1812 Grootebroek, North Holland, Netherlands | 23 November 1877 Grootebroek, North Holland, Netherlands | Jacob Brandsen (c1824-1871) |
| Jan Jonker (c1815-1841) | |||
| Teetje Jonker (c1820-1898) | |||
| Barend Jonker (c1823-1842) | |||
Footnotes (including sources)
| ‡ General |
| ¶ Death |