Jacob Speijer was the eldest son of Bernar Speijer and Marianna à Catan and was born on 1 September 1920 in Amsterdam. His parents were married in August 1919 and they then lived at Zwanenburgerstraat 45. During the years untill 1937 Jacob regularly had a new brother or sister; in the end 10, of whom one little brother died at the age of 1 year. Also his mother died at home in Amsterdam in 1942 bu…