Mozes Barend Slagter, the eldest son of Barend Mozes Slagter and Henriette Polak, was born on 22 July 1917 in Rotterdam. After graduating from gymnasium B, he worked as a travelling salesman, office clerk and stencil printer, possibly in his father’s advertising agency and he was also a cantor. Per 26 July 1942, together with his sister Rosetta, he came in possession of an Jewish Council I.D. no.…