List of maphrians
The Maphrian, originally known as the Grand Metropolitan of the East or the Catholicos, was the head of the Maphrianate of the East and was the second highest-ranking prelate within the Syriac Orthodox Church, after the Patriarch of Antioch. The maphrianate originated as a distinct miaphysite ecclesiastical institution in the Sasanian Empire after the ordination of Ahudemmeh as Grand Metropolitan of the East by Jacob Baradaeus in 559.