Joseph Gompers, born 22 March 1899 in Amsterdam, was a son of Philip Gompers and Rebecca de Haan. He married on 20 January 1921 in Amsterdam Marianne Loonstein, who was born 20 October 1895 in Amsterdam as a daughter of Jacob Loonstein and Naatje Speijer. The couple had one son, Philip Louis, born 17 December 1921 but who have been killed in Mauthausen on 24 September 1941, just 19 years old. Anot…