Jacob Mok was a son of Salomon Mok and Mietje Katwijk.10 September 1941 he married Gesina Englander from Alkmaar in Amsterdam, a daughter of Gompert Englander and Femmetje Keesje. 7 September 1942 the couple had a son Salomon, who survived the Shoah.
In 1923, Jacob Mok was dealer in woolen articles. 1 December 1922 he reveived his vendor permit from the municipality of Amsterdam and attended the s…