He is mentioned as follows: 'At Rhedónibus (Rennes) in Brittany, bishop, who passed to God in the place called Plácium on the River Vicenóniam (Vilaine), where with his own hands he built a church and gathered a congregation of monks and servants of God'.
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Traditions recounted by Baring-Gould state that on the death of Amand, he was compelled by the local population to become the next Bishop, accepting the role with great reluctance; that he performed many miracles and put an end to heathen practices; and that following his death at La Vilaine, his body was placed on a boat which then returned to Rennes against the current without the assistance of rowers or sails.