He resigned his prebend to embrace an eremitical life under Robert of Arbrissel in the forest of Craon, located in Anjou.
[1] The number of disciples who then gathered around him necessitated the construction of adequate buildings, in which was instituted the monastic life, following the Rule of St. Benedict, interpreted in a manner similar to the Cistercians.
Under Geoffroy, successor to Vitalis, Henry I of England, established and generously endowed twenty-nine monasteries of this Congregation in his dominions.
Abbot Serlo, third successor of the founder, found it difficult to retain his jurisdiction over the English monasteries, who wished to make themselves independent.
Of all its former dependencies only La Grande Trappe, a daughter of Le Breuil-Benoît Abbey, which was a direct foundation of Savigny, remains.