Born ‎16-3-1893 Rotterdam, Netherland, died ‎18-12-1921 Amsterdam, Netherland‎, 27 or 28 years. Son of Joseph van der Sluis/ Fresc and Betje van der Kloot/ de Konin‏

Born ‎28-4-1890 Amsterdam, Netherland, died ‎28-9-1942 Auschwitz-Biala Podleska, Poland‎, 51 or 52 years, ‎1st marriage to: Leo Marcus Dasberg - de Winter, ‎2nd marriage to: Israel van der Sluis - van der Kloot. Daughter of Benjamin de Jesaias Pais - de Mark and Alida Altenberg‏