Louis Mechanicus was a son of Elias Mechanicus and Sara Gobes. He was born on 27 December 1901 in Amsterdam. In 1920 he was a carriage painter by profession. Later he worked as a painter for a building association. On 18 September 1935 he married in Amsterdam Margaretha Peper, who was born there on 8 February 1908 as a daughter of Levie Peper and Johanna Vos. Margaretha had another brother named …