Born ‎4-11-1887 Amsterdam, Netherland, died ‎7- May 1943 Amsterdam, Netherland‎, 55 or 56 years. Daughter of Machiel Zak - de Groot and Judith Olivier - Borstel‏

Born ‎13-2-1898 Amsterdam, Netherland, died ‎31-3-1943 Seibersdorff‎, 44 or 45 years, ‎1st marriage/ related to: Judith Zak - de Jong, ‎2nd marriage to: Marianne Zak - Olivier