Bertha van Gelderen Born 11-11-1883 Amsterdam, Netherland, died 28-9-1942 Auschwitz-Katowice, Poland, 58 or 59 years. Daughter of N.N. and Sara van Gelderen Married to: Philip Polak - Keizer Born 31-1-1879 Leeuwarden, Netherland. Son of Benjamin Polak/ de Leeu and Henriette Keizer\Keijzer/ de leeu |