Elisabeth Kuijper was a daughter of Hartog Mozes Kuijper and Elisabeth Gotlib, who had a family with twelve children and lived in Grave. She married Levie Polak from Steenwijk on 17 November 1889 in Groningen, a son of Benjamin Polak and Rebekka van der Velde. The couple had two children: Rebekka, who was married to Comprecht Cohen from Delfzijl and Hartog who married Hanna Cutzien. Elisabeth's hu…