Born ‎19-4-1899 Amsterdam, Netherland, died ‎4- Jun 1943 Sobibor-Biala Podleska, Poland‎, 43 or 44 years. Occupation: Principal. Son of Salomon de Vries and Keetje Polak‏

Born ‎7-12-1902 Haarlem, Netherland, died ‎4- Jun 1943 Sobibor-Biala Podleska, Poland‎, 40 or 41 years. Occupation: Music teacher. Daughter of Izaak Levie Prins - Heijmans and Rosalie Prins - de Jonge‏