Wandregisel was part of a group of young courtiers including Audoin and Didier of Cahors who served Dagobert I, but in 629 he retired from court to become a monk at Montfaucon under the guidance of Saint Balderic.

Wandregisel had received the tonsure without the permission normally required for a courtier, and was summoned to court to explain this apparent oversight.

Wandregisel was ordained, and then founded Fontenelle Abbey in Normandy,[1] on land obtained from Erchinoald through the influence of his friend Archbishop Audoin of Rouen.

However, as late as the 11th century, traditionalist monks such as Eccard IV of St Gallen (in modern Switzerland) continued to protest the innovation.

[7] During the Viking invasions, Wandregisel's relics were dispersed to various locations and shared between various churches, including the abbey of Saint-Pierre-au-Mont-Blandin in Ghent (now in Belgium).