Joseph Woudhuijsen, a son of Henry Woudhuijsen and Klara Doof, married Elisabeth Swart, the fourth of Salomon Swart and Grietje Deutz's seven children, in Amsterdam on 4 November 1936. The couple had a son, Henry Joseph Woudhuijsen. Joseph Woudhuijsen was a salesman.
A copy remains of the marriage certificate of Joseph Woudhuijsen and Elisabeth Swart.