[3] In 654, through the influence of Queen Balthild of Chelles, Philibert received a gift of land from Clovis II on which he founded Notre Dame de Jumièges.
Philibert did not hesitate to confront Ebroin, the mayor of the palace of Neustria, about his treat of Leodegar, Bishop of Autun, who had died a martyr.
He chose exile from Neustria and withdrew to Austrasia and the court of Bishop Ansoald of Poitiers who put his own foundation of Luçon Abbey under Philibert's charge.
[6] On the island, in addition to evangelization, the monks carried out important work: agricultural development, irrigation, communication routes, salt exploitation, and construction of monastic buildings.
Five years later, still with the bishop of Poitiers, he developed, with monks from Noirmoutier, a priory that would become the royal abbey of Saint-Michel-en-l'Herm, partly at the origin of the Marais Poitevin.
This translation by the monks of Noirmoutier gave rise to several foundations and numerous Carolingian endowments, creating a large monastic network.