Serge married Marie Clothilde Eugenie Alberte Laetitia Genevieve Bonaparte on 17 Oct 1938 in London, London, England. Marie (daughter of Napoléon Victor Jérôme Frédéric Bonaparte (maid. name titular 4th Prince of Montfort) and Clémentine Albertine Marie Léopoldine von Sachsen-Coburg und Gotha) was born on 20 Mar 1912 in Brussels, Belgium; died on 14 Apr 1996 in Cendrieux, Dordogne, Aquitaine, France. [Group Sheet] [Family Chart]

1. Napoleon Serge DeWitt was born in 1942; died on 6 Nov 1942 in Sousse, Susah, Tunisia.
2. Yolande DeWitt was born on 9 Jan 1943; died on 6 Jul 1945 in Sousse, Susah, Tunisia.