Klaas married Marigje den Ouden on 30 Dec 1857 in Nieuwerkerk aan den IJssel. Marigje (daughter of Teunis den Ouden and Maria Pottuijt) was born about 1824 in Berkenwoude; died on 29 Jul 1905 in Nieuwerkerk aan den IJssel. [Group Sheet] [Family Chart]