Jonas Dingsdag was the youngest of the twelve children of Levie Dingsdag and Mietje Theeboom. He was born on 14 August 1916 in Amsterdam and he became a goldsmith by profession. Untill May 1939 he lived at Blasiusstraat 120 1st stock with his parents. His sibs Joseph and Mozes and their families lived there too on the 2nd floor. At the end of May 1939 Jonas stayed shortly in Enschede, at Noorderha…