Jacob Cohen de Heer from Dordrecht was a son of Jacob Cohen de Heer and Grietje Spetter. He married Alida Betsi van Witsen in Rotterdam 22 May 1907, a daughter of Salomon van Witsen and Rosetta Roos. The couple had three children, namely . Grietje Rosa in 1908, Rosetta in 1910 en Jacob in 1912. Jacob’s spouse however passed away 26 May 1927 and was interred in the Jewish Cemetery Toepad at Rott…