Jacques Neuburger was a son of Andries Neubeurger and Betje Eljon. He worked as a diamond polisher and had spent some time in Antwerp until 1924. Later he became a manufacturer of ladies' garments, but eventually he started his old profession as a diamond polisher again. He married for the first time in 1925 to Elisabeth Natkiel. She died in 1929. In 1927 he had a child with her. He married Leent…