It existed from 1131 to 1793, being founded by monks from the abbey of Clairvaux, at the behest of Jocelin of Soissons. There is now a hotel on the site. The original buildings suffered war damage in 1918.
- Poquet, Monographie de l'abbaye de Longpont (Paris: 1869)
- ↑ CATHOLIC ENCYCLOPEDIA: Abbey of Clairvaux
- ↑ Picardie 14-18 ::. Vestiges de l'abbaye de Longpont
- ↑ Catholic Encyclopedia: Soissons