Barend Mozes Slagter was born on 11 August 1884 as the third of the five children from the family of Mozes Barend Slagter and Rosetta Zoest. He started his career as travelling salesman with faience-pottery, but later he became the proprietor of an advertising agency and was a correspondent for Jewish- and other magazines. On 16 August 1916 he married in Rotterdam Henriette Polak, who was born 27 …