Born ‎23-8-1906 Rotterdam, Netherland, died ‎16-10-1931 Rotterdam, Netherland‎, 24 or 25 years. Daughter of Meijer de Leeuw and Barbara Polk‏

Born ‎25-1-1904 Rotterdam, Netherland, died ‎30-9-1942 Auschwitz-Katowice, Poland‎, 37 or 38 years. Occupation: Buyer, ‎1st marriage/ related to: Francina Elisabeth Goldsteen, ‎2nd marriage/ related to: Clara de Leeuw - Polk. Son of Louis van Dam - van Velsen and Klaartje Kloot - Schlosser‏