Izak de Lange (son of Mozes de Lange en Roosje de Lange) was a cattle dealer. He was married to Elisabeth Noach, daughter of Abraham Salomon Noach and Sophia Berg. The couple had four children. Mozes, the oldest child, was a good piano player. He worked at the municepality. Jozef worked as a butcher. Sophia was a hear dresser. He died while in hiding. The fourth child survived the war.
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