Jan Koster, born in Franeker on June 18, 1840, son of Ernst Jans Koster and Trijntje Willems Geldersma, painter's man, died in Harlingen on February 23, 1918, aged 77 years.


Jan was married in Harlingen on May 17, 1866, at the age of 25 to
Elisabeth van der Wijk (aged 24 years), born in Harlingen on February 4, 1842, daughter of Jan Jans van der Wijk and Gerritje Foppes Molenaar, died there on January 15, 1890, aged 47 years.

From this marriage: