Agnes Zandbergen was born 16 January 1785 in Vollenhove, Overijssel, Netherlands to Willem Zandbergen (1755-1837) and Seijntjen Winter (1751-) and died 26 July 1849 Vollenhove, Overijssel, Netherlands of unspecified causes. She married Jan Kelder (c1760-1835) in Overijssel, Netherlands. She married Klaas Post (1784-1865) in Overijssel, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Willem Kelder (1807-) | |||
| Hendrika Kelder (1810-1846) | 1 March 1810 Vollenhove, Overijssel, Netherlands | 7 January 1846 Vollenhove, Overijssel, Netherlands | Peter van Eerde (1805-1883) |
| Francijntje Kelder (1812-1862) | 30 September 1812 Vollenhove, Overijssel, Netherlands | 10 December 1862 Vollenhove, Overijssel, Netherlands | Kees Post (c1811-1864) |
| David Kelder (1815-1842) | 20 December 1815 Vollenhove, Overijssel, Netherlands | 25 July 1842 Vollenhove, Overijssel, Netherlands | |
| Jennegien Keller (1818-1901) | 4 September 1818 Vollenhove, Overijssel, Netherlands | 6 January 1901 Ommen, Overijssel, Netherlands | Kees Post (c1822-1869) |
| Derk Kelder (c1822-1886) | 1822 Vollenhove, Overijssel, Netherlands | 18 May 1886 Vollenhove, Overijssel, Netherlands | Hanna Visscher (c1824-1891) |
Residences