Gerrit Idesz Jonker was born 22 April 1765 in Westeinde, Enkhuizen, North Holland, Netherlands to Ide Jonker (-1779) and Meinouwtje Slot (1726-1794) and died 27 January 1827 Lutjebroek, North Holland, Netherlands of unspecified causes. He married Geertje Oud (1764-1847) 21 October 1782 in Grootebroek, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Pieter Jonker (1783-1812) | 22 December 1783 Bovenkarspel, North Holland, Netherlands | 27 June 1812 Den Helder, North Holland, Netherlands | Antje Buijs (1783-1834) |
| Ide Jonker (1786-1786) | |||
| Meinouwtje Jonker (1788-1837) | 7 September 1788 Bovenkarspel, North Holland, Netherlands | 2 March 1837 Grootebroek, North Holland, Netherlands | Klaas Bakker (1788-1846) |
| Ide Jonker (1791-c1812) | |||
| Cornelis Jonker (1793-bef1827) | |||
| Jan Jonker (1794-1794) | |||
| Marijtje Jonker (1797-1853) | |||
| Jantje Jonker (1799-1799) | |||
| Joannes Jonker (1801-) | |||
| Cornelia Jonker (1804-1885) | 30 November 1804 Lutjebroek, North Holland, Netherlands | 7 April 1885 Lutjebroek, North Holland, Netherlands | Pieter Tiet (1802-1868) |
Siblings