 Frederika van Gelder/ CoheBorn 12-9-1887 Groningen-Groningen, Netherland, died 23-4-1943 Sobibor-Biala Podleska, Poland, 55 or 56 years. Daughter of Nathan van Gelder/ Oppenhei and Rika Cohen/ de Jon Married 9-11-1913 Groningen-Groningen, Netherland (29 or 30 years married) to:  Salomon Roos/ LandsbergeBorn 1- mar 1890 Amsterdam, Netherland, died 23-4-1943 Sobibor-Biala Podleska, Poland, 52 or 53 years. Son of Hartog Roos and Betje Landsberger | |||