Born ‎19-5-1913 Amsterdam, Netherland, died ‎4- Jun 1943 Sobibor-Biala Podleska, Poland‎, 29 or 30 years. Son of Samuel van der Velde and Hanna Walvis‏

Born ‎10-11-1911 Amsterdam, Netherland, died ‎3-12-1942 Auschwitz-Biala Podleska, Poland‎, 30 or 31 years, ‎1st marriage to: Marcus Gompertz - Swaab, ‎2nd marriage to: Philip van der Velde - Walvis. Daughter of Emanuel du Bruin - Stokvis and Rebecca Potzer‏