Saint Mastalo of Amalfi

Saint Mastalo was a 10th-century Byzantine who served as the 11th Catholic bishop of Amalfi from 960 to 987 and is a saint in the Roman Catholic Church. He was the last bishop of the see, as the church of Amalfi was elevated to an archdiocese following his death in 986 or 987. A lead seal (bulla) belonging to Mastalo has been found at the Basilica of Saint Mary Major; it bears the inscription "Mastalo Bishop" on one side and an image of the Apostle Andrew on the other.