| Thibaud III - Count of Blois | Set the ground for the priory (end XI). |
| Étienne de Blois - Count of Blois, son of Thibaud III | Signed the foundation charter in 1089. |
| Gelduin (ou Guelduin) - Vassal of Eudes II, founder of Pontlevoy | Originally the mother abbey of the priory. |
| Eudes II de Blois - Count of Blois (early 11th) | Donna Chaumont/Pontlevoy in Gelduin. |