Constant married Johanna Maria Klomp on 1 Sep 1903 in Den Haag, and was divorced on 31 Jan 1922 in Den Haag. Johanna (daughter of Gerardus Klomp and Anna Kuijpers) was born on 21 Mar 1876 in Den Haag; died on 28 May 1958 in Dordrecht. [Group Sheet] [Family Chart]
