1. | Jan Kooijstra was born on 5 May 1893 in Arnhem. Jan married Willemina Helena van den Berg on 7 Sep 1920 (onbekend) in Apeldoorn. Willemina (daughter of Karel van den Berg and Willemina Schuchkool) was born on 12 May 1897 in Sloterdijk. [Group Sheet] [Family Chart] |