Born ‎30-5-1892 Warsaw, Poland, died ‎8- Apr 1944 Auschwitz-Katowice, Poland‎, 51 or 52 years. Son of Joel Itzig Ritterband and Adela Langleben‏

Born ‎9-10-1895 Amsterdam, Netherland, died ‎31-8-1944 Auschwitz-Katowice, Poland‎, 48 or 49 years. Daughter of Isaak Hartog Frank - Frank and Catharina Mogendorff - van Dam‏