Sergius of Tella was the Patriarch of Antioch and head of the Syriac Orthodox Church from c. 544 to c. 547 or c. 557 to 560.
[1] He became a monk at the monastery of Hala, and was ordained a priest by the bishop John of Anazarbus.
[2] As a monk, Sergius accepted the doctrine of tritheism,[3] and accompanied Jacob Baradaeus to Constantinople in 527.
[4] At Constantinople, Sergius tutored Empress Theodora's grandson Athanasius,[3] and became a friend of John Philoponus, who wrote a non-Chalcedonian treatise named "A Treatise Concerning the Whole and the Parts" at Sergius' request.
[5] He died a natural death,[1] either in 547 as per the Zuqnin Chronicle, or in 560 as per John of Ephesus.