Saint Amatus, also called St. Aimé, was a Benedictine monk.
After being the abbot of the Agaune monastery in Switzerland, he became bishop of the Sens (or Sion) diocese in the Valais. After being (falsely) accused, he went into exile, first to Peronne, and later to Breuil, where he died in 690.
His memorial day is September 13.