womanBetje Walvis - Posener‏‎
Born ‎28-12-1895 Amsterdam, Netherland, died ‎3- sep 1943 Auschwitz-Katowice, Poland‎, 47 or 48 years. Occupation: caretaker. Daughter of Zacharias Walvis and Fijtje Posener

Marriage/ Related to:

manGerrit Koster‏‎
Born ‎29-10-1895 Amsterdam, Netherland, died ‎31-3-1944 Auschwitz-Katowice, Poland‎, 48 or 49 years. Occupation: Caretaker

Child:

1)
manJesaijas Jacob Koster - Walvis‏‎
Born ‎2- sep 1921 Amsterdam, Netherland, died ‎31-3-1944 Auschwitz-Biala Podleska, Poland‎, 22 or 23 years