In addition to his Kentucky horse farm, in 1908 Belmont established Haras de Villers, a breeding operation near Foucarmont in Upper Normandy, France.
Marie of Lusignan or Marie I de Lusignan (born c. 1223 in Melle; died in Poitou, October 1, 1260; buried at the Abbey of Foucarmont), was the only child and daughter of Raoul II of Lusignan and his second wife, Yolande de Dreux.