Jozef Lens was the second of the seven sons of Elkan Lens and Flora Kosman. He was born 19 November 1894 in Den Haag and he was a typographer by profession. He married 30 November 1921 in Den Haag Margaretha Cachet, a daughter of Eliazer Cachet and Maria Ketellapper, both from Amsterdam. Just as the Lens family, also Margaretha was born into a family with five children, of whom she was second to t…