Monastic Life at Luxeuil
Cagnoald received the monastic tonsure at the abbey of Luxeuil in Burgundy, founded by St. Columbanus, and lived as the saint's disciple. According to the life of Columbanus written by the monk Jonas of Bobbio, Columbanus once withdrew into the forest to fast and pray, and the only food remaining to him and the young Cagnoald was wild crab apples. When Cagnoald discovered a bear eating the fruit and reported it, Columbanus directed him to divide the orchard in two, leaving one half for the bear and one half for the monks.
Sources relate that when Eustace, abbot of Luxeuil, traveled to the court of King Chlothar II, he left Cagnoald in charge of the monastery, and that Cagnoald together with Waldebert was assigned to instruct the nuns at the double monastery of Faremoutiers, the house founded by his sister Burgundofara.