Born ‎21-1-1891 Amsterdam, Netherland, died ‎15-10-1942 Auschwitz-Katowice, Poland‎, 50 or 51 years. Son of Isaac Pront and Roosje Groen - Goud‏

Born ‎8- Feb 1890 Amsterdam, Netherland, died ‎11-6-1943 Sobibor-Biala Podleska, Poland‎, 52 or 53 years, ‎1st marriage to: Jonas Pront - Groen, ‎2nd marriage to: Isaac van Velzen - Cosman. Daughter of Machiel Tak - Goudeket and Mietje Bronkhorst - Fles‏