Abbey of Saint Wandrille to Bobbio Abbey and then to Romainmôtier Abbey, where he remained for ten years. In 648 he returned to Normandy and established the monastery of Fontenelle, using the Rule of Saint Columbanus, which he had known at Bobbio; the deed of gift of the land is dated 1 March 649. He first built a Carolingian style basilica dedicated to Saint Peter, nearly long, which was consecrated by Saint Ouen in 657. (This church was destroyed by fire in 756 and rebuilt by Abbot Ansegisus (823–33), who added a narthex and tower). The monastery was extremely successful at first, and produced
Abbey of Saint Bertin commune ordered the demolition of the church, though they spared the tower. The buttress they erected to support it is still visible, although the tower itself collapsed in 1947 owing to damage sustained in the shelling of the town during World War II. St-Omer's town hall was constructed with stone removed from the site in 1834. Abbey of Saint Bertin The Abbey of St. Bertin was a Benedictine monastic abbey in Saint-Omer, France, which now in ruins that are open to the public. It was initially dedicated to but was rededicated to its second abbot, . The abbey is known