Antje Duim, born in Balk circa 1875, daughter of Hendrik Sjoerds Duim and Jetske Reins Jaarsma.

Antje was married in Enkhuizen on August 23, 1900, at the age of approximately 25 to
Willem Hielke Heinsius (aged 20 years), born in Workum on September 19, 1879, son of Dubbeld Heinsius and Gelske Johannes Feenstra, bouwersknecht.