Trijntje Willems Geldersma, born in Franeker on September 5, 1812, daughter of Willem Pieters Geldersma and Aafke Pieters Vlietstra, died in Harlingen on January 25, 1902, aged 89 years.


Trijntje was married in Franeker on May 14, 1837, at the age of 24 to
Ernst Jans Koster (aged 20 years), born in Franeker on August 1, 1816, son of Jan Bernardus Koster and Klaske Jans Groeneveld, died in Harlingen on April 10, 1862, aged 45 years.

From this marriage: