sentences:  In origin it was the church of the Benedictine Abbey of St. Justus, established in 1029 by Marchese Olderico Manfredi to house the newly discovered relics of Saint Justus.The church was built around 1100 and has since been refurbished and restored several times.It was not until 1772 that the bishopric of Susa was created from the territory of the abbey, previously a territorial abbacy, and at that point the abbey church was made the cathedral of the new diocese.