Alexander was a bishop

Bishop

A bishop is an ordained or consecrated member of the Christian clergy who is generally entrusted with a position of authority and oversight. Within the Catholic Church, Eastern Orthodox, Oriental Orthodox Churches, in the Assyrian Church of the East, in the Independent Catholic Churches, and in the...

 of Apamea

Apamea (Syria)

Apamea was a treasure city and stud-depot of the Seleucid kings, was capital of Apamene, on the right bank of the Orontes River. . Its site is found about to the northwest of Hama, Syria, overlooking the Ghab valley...

 in Syria

Syria

Syria , officially the Syrian Arab Republic , is a country in Western Asia, bordering Lebanon and the Mediterranean Sea to the West, Turkey to the north, Iraq to the east, Jordan to the south, and Israel to the southwest....

 in the 5th century. He was one of a number of moderate Eastern bishops during the Nestorian controversy

Nestorianism

Nestorianism is a Christological doctrine advanced by Nestorius, Patriarch of Constantinople from 428–431. The doctrine, which was informed by Nestorius's studies under Theodore of Mopsuestia at the School of Antioch, emphasizes the disunion between the human and divine natures of Jesus...

, and one of the eight bishops deputed by the party of John of Antioch to the Emperor Theodosius II

Theodosius II

Theodosius II , commonly surnamed Theodosius the Younger, or Theodosius the Calligrapher, was Byzantine Emperor from 408 to 450. He is mostly known for promulgating the Theodosian law code, and for the construction of the Theodosian Walls of Constantinople...

. Alexander was sent with his namesake, Alexander of Hierapolis

Alexander of Hierapolis

Alexander of Hierapolis was the name of two different bishops of that city:*Alexander, a bishop of Hierapolis in Phrygia, who flourished around the year 253. He was the author of a book titled On the new things introduced by Christ into the world , which is no longer extant.*Alexander, a bishop...

, by John of Antioch

John of Antioch

John of Antioch was Patriarch of Antioch and led a group of moderate Eastern bishops during the Nestorian controversy. He is sometimes confused with John Chrysostom, who is occasionally also referred to as John of Antioch. John gave active support to his friend Nestorius in the latter's dispute...

 to the Council of Ephesus in 431. The Alexanders brought word that John had not yet arrived in Ephesus

Ephesus

Ephesus was an ancient Greek city, and later a major Roman city, on the west coast of Asia Minor, near present-day Selçuk, Izmir Province, Turkey. It was one of the twelve cities of the Ionian League during the Classical Greek era...

 and that the council should start without him.

A letter by him is extant in Latin in the Nova Collectio Conciliorum of Étienne Baluze

Étienne Baluze

Étienne Baluze was a French scholar, also known as Stephanus Baluzius.Born in Tulle, he was educated at his native town and took minor orders. As secretary to Pierre de Marca, archbishop of Toulouse, he won his appreciation of him, and at his death Marca left him all his papers...

, p. 834. c. 132. fol, Paris, 1683.