Trijntje van Exter was born 4 September 1780 in Hoorn, North Holland, The Netherlands to Jan van Exter (1747-1791) and Antje Vader (1743-1825) and died 24 May 1853 Medemblik, North Holland, The Netherlands of unspecified causes. She married Antonie Bos (1779-1841) 4 August 1811 in Medemblik, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Catharina Bos (1806-1867) | 7 March 1806 Enkhuizen, North Holland, The Netherlands | 22 June 1867 Lutjebroek, North Holland, The Netherlands | Carl Anthon Steltenpohl (1799-1846) |
Siblings
| Name | Birth | Death | Joined with |
| Pieter van Exter (1779-1863) | |||
| Trijntje van Exter (1780-1853) | 4 September 1780 Hoorn, North Holland, The Netherlands | 24 May 1853 Medemblik, North Holland, The Netherlands | Antonie Bos (1779-1841) |
| Teunis van Exter (1774-1835) | |||
| Jacobus van Exter (1771-) | |||
| Antje van Exter (-) | |||
| Frans van Exter (1776-) | |||
| Aafje van Exter (1777-) | |||
| Adriaan van Exter (1782-) | |||