Joseph Jacques van Weezel (nicknamed Joop) was unmarried.He came from a social-democratic family. His father had been active in the General Dutch Diamondworkers Union (ANDB) and in the workers cooperation De Dageraad.
Joseph Jacques van Weezel was a chemist. He worked as an editor and scientific staff member of the Communist newspaper De Tribune, later Het Volksdagblad. He did illegal work for t…