Betje van Geldere was the twelfth of the thirteen children of Salomon van Geldere and Sophia Polak. She was born in Rotterdam on 9 December 1875 and married there on 17 June 1903 the butcher Benjamin Manassen, who was born on 20 November 1872 in Druten as a son of Mozes Manassen and Jeannette Vles.
The Manassen-van Geldere couple had three children, viz. Sophia Jeannette in 1903, Jeannette in 1906 and Salomon Mozes in 1908. Sophia Jeannette was married in 1930 to Jacob Zeldenrust and they survived the Holocaust. Also Salomon Mozes, who was married to Saartje Cohen in 1938, most likely hav survived the war too. Only their daughter Jeannette, who was married to Mozes Hijman Lezer were both murdered during the Shoah. There son Menno survived the Holocaust as he was given into hiding.
Benjamin Manassen passed away on 17 October 1937 in Tiel. His widow Betje Manassen-van Geldere, who lived at Waldeck Pyrmontlaan 16 in Rijswijk in 1943, was carried off on 31 March 1943 from there to the camp hospital in Westerbork, which was established in barrack 85A. On 13 April she was put on transport to Sobibor with another 1200 other victims and upon arrival there on 16 April 1943 she was immediately murdered in the gas chambers.
Sources include the City Archive of Rotterdam, family registration card of Salomon an Geldere; wedding certificate from 1903 for Manassen x Van Geldere; the file cabinet of the Jewish Council, registration card of Betje Manassen van Geldere and the Wikipedia website jodentransporten vanuit Nederland.nl