Trijntje Kornelis van Wieren, born in Dantumadeel on June 30, 1889, daughter of Kornelis Gerbens van Wieren and Sybrigje Ypes Poortinga.

Trijntje was married in Dantumadeel on April 30, 1914, at the age of 24 to
Hedzer Castelein (aged approximately 26 years), born circa 1888 (?).