Isaak married Maartje Maij on 25 Jun 1826 in Zaandam (NL). Maartje (daughter of Gerrit Maij and Grietje Schoen) was born on 24 Mar 1792 in Koog aan de Zaan (NL); was christened on 25 Mar 1792 in Koog aan de Zaan (NL); died on 18 Sep 1858 in Zaandam (NL). [Group Sheet] [Family Chart]