Jacob Dingsdag was one of the twelve children of Levie Dingsdag and Mietje Theeboom. He was born in Amsterdam on 27 June 1908 and started working as a butcher’s aid. Later he earned his living as a trader and a (clothing)-presser. On 16 November 1938 he married Henriette Suiskind in Amsterdam, who was born in Schüttorf Germany on 8 January 1912 as a daughter of Samson Suiskind and Rosa Helena Goed…