Saint-Calais is a commune in the Sarthe department in the region of Pays de la Loire in north-western France. Prior to the French Revolution it was known for its Benedictine abbey named after the Anisola stream. Saint-Calais is a later name coming from one of the local saints of the Perche area. William of St. Calais, a product of this monastery, was a post-conquest bishop of Durham. There are no remains of the Abbey, which was a principal land-owner in the vicinity.