Abraham Polak was a son of Benjamin Moses Polak and Rachel Aandagt. He married on 17 June 1896 in Amsterdam to Grietje Brilleman, daughter of Joseph Brilleman and Branca Broekman. The couple had three children: a daughter Branca, (she passed away in 1933, but her husband Samuel de Gorter survived the Holocaust, just as their daughter Helena Wilhelmina, however their other daughter Margaretha did n…