Born ‎13-2-1889 Amsterdam, Netherland, died ‎10-9-1942 Auschwitz-Katowice, Poland‎, 52 or 53 years. Son of Nathan Bak - Brilleslijper and Grietje Wurms - de Hond‏

Born ‎14-2-1891 Amsterdam, Netherland, died ‎10-9-1942 Auschwitz-Katowice, Poland‎, 50 or 51 years, ‎1st marriage to: Isaac Gans - Gans, ‎2nd marriage to: Joseph Bak - Wurms. Daughter of Eliazar Delden and Roosje Roe‏