Betje de Lange, born in Elburg in 1887, was one of the nine children of Joseph de Lange and Matje Hamberg. She was unmarried. Her father, born 1847 in Elburg, died in his residence 15 June 1919. His wife Matje Hamberg passed away in Elburg too, on 26 March 1941.
Betje de Lange had eight siblings, of whom Hartog, Jannetje and Mietje have survived the Holocaust; her baby-sister Eve died in 1893, onl…