The Diocese of the East ( la, Dioecesis Orientis; el, ) was a

diocese In church governance, a diocese or bishopric is the ecclesiastical district under the jurisdiction of a bishop. History In the later organization of the Roman Empire, the increasingly subdivided provinces were administratively associa ...

of the later

Roman Empire The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post- Republican period of ancient Rome. As a polity, it included large territorial holdings around the Mediter ...

, incorporating the provinces of the western

Middle East The Middle East ( ar, الشرق الأوسط, ISO 233: ) is a geopolitical region commonly encompassing Arabia (including the Arabian Peninsula and Bahrain), Asia Minor (Asian part of Turkey except Hatay Province), East Thrace (Europ ...

, between the

Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the ...

and

Mesopotamia Mesopotamia ''Mesopotamíā''; ar, بِلَاد ٱلرَّافِدَيْن or ; syc, ܐܪܡ ܢܗܪ̈ܝܢ, or , ) is a historical region of Western Asia situated within the Tigris–Euphrates river system, in the northern part of the ...

. During

late Antiquity Late antiquity is the time of transition from classical antiquity to the Middle Ages, generally spanning the 3rd–7th century in Europe and adjacent areas bordering the Mediterranean Basin. The popularization of this periodization in English ha ...

, it was one of the major commercial, agricultural, religious and intellectual areas of the empire, and its strategic location facing the Sassanid Empire and the unruly desert tribes gave it exceptional military importance.

History

The capital of the diocese was at

Antioch Antioch on the Orontes (; grc-gre, Ἀντιόχεια ἡ ἐπὶ Ὀρόντου, ''Antiókheia hē epì Oróntou'', Learned ; also Syrian Antioch) grc-koi, Ἀντιόχεια ἡ ἐπὶ Ὀρόντου; or Ἀντιόχεια ἡ ἐπ� ...

, and its governor had the special title of ''

comes Orientis The Diocese of the East ( la, Dioecesis Orientis; el, ) was a diocese of the later Roman Empire, incorporating the provinces of the western Middle East, between the Mediterranean Sea and Mesopotamia. During late Antiquity, it was one of the majo ...

'' ("Count of the East", of the rank ''vir spectabilis'' and later ''

vir gloriosus ''Vir gloriosus'' (Latin for "glorious man", gr, ἔνδοξος, ''endoxos'') or ''gloriosissimus'' ("most glorious", gr, ἐνδοξότατος, ''endoxotatos'') was the highest rank available to the senatorial aristocracy of the East Roman or ...

'') instead of the ordinary "''

vicarius ''Vicarius'' is a Latin word, meaning ''substitute'' or ''deputy''. It is the root of the English word "vicar". History Originally, in ancient Rome, this office was equivalent to the later English " vice-" (as in "deputy"), used as part of th ...

''". The diocese was established after the reforms of Diocletian (r. 284–305), and was subordinate to the

praetorian prefecture of the East The praetorian prefecture of the East, or of the Orient ( la, praefectura praetorio Orientis, el, ἐπαρχότης/ὑπαρχία τῶν πραιτωρίων τῆς ἀνατολῆς) was one of four large praetorian prefectures into whic ...

. The diocese included originally all Middle Eastern provinces of the Empire: Isauria,

Cilicia Cilicia (); el, Κιλικία, ''Kilikía''; Middle Persian: ''klkyʾy'' (''Klikiyā''); Parthian: ''kylkyʾ'' (''Kilikiyā''); tr, Kilikya). is a geographical region in southern Anatolia in Turkey, extending inland from the northeastern coa ...

Cyprus Cyprus ; tr, Kıbrıs (), officially the Republic of Cyprus,, , lit: Republic of Cyprus is an island country located south of the Anatolian Peninsula in the eastern Mediterranean Sea. Its continental position is disputed; while it is ge ...

Euphratensis Euphratensis (Latin for " Euphratean"; grc-gre, Εὑφρατησία, ''Euphratēsía''), fully Augusta Euphratensis, was a late Roman and then Byzantine province in Syrian region, part of the Byzantine Diocese of the East. History Sometime bet ...

Osroene Osroene or Osrhoene (; grc-gre, Ὀσροηνή) was an ancient region and state in Upper Mesopotamia. The ''Kingdom of Osroene'', also known as the "Kingdom of Edessa" ( syc, ܡܠܟܘܬܐ ܕܒܝܬ ܐܘܪܗܝ / "Kingdom of Urhay"), according to ...

, Syria Coele,

Phoenice Phoenice or Phoenike ( el, Φοινίκη) was an ancient Greek city in Epirus and capital of the Chaonians.: "To the north the Chaonians had expelled the Corcyraeans from their holdings on the mainland and built fortifications at Buthrotum, K ...

Palaestina Prima Palaestina Prima or Palaestina I was a Byzantine province that existed from the late 4th century until the Muslim conquest of the Levant in the 630s, in the region of Palestine. It was temporarily lost to the Sassanid Empire (Persian Empire) in ...

Palaestina Secunda Palæstina Secunda or Palaestina II was a Byzantine province from 390, until its conquest by the Muslim armies in 634–636. Palaestina Secunda, a part of the Diocese of the East, roughly comprised the Galilee, Yizrael Valley, Bet Shean Valley a ...

Arabia The Arabian Peninsula, (; ar, شِبْهُ الْجَزِيرَةِ الْعَرَبِيَّة, , "Arabian Peninsula" or , , "Island of the Arabs") or Arabia, is a peninsula of Western Asia, situated northeast of Africa on the Arabian Plat ...

, and the

Egyptian Egyptian describes something of, from, or related to Egypt. Egyptian or Egyptians may refer to: Nations and ethnic groups * Egyptians, a national group in North Africa ** Egyptian culture, a complex and stable culture with thousands of years of ...

provinces Aegyptus,

Augustamnica ''Augustamnica'' (Latin) or ''Augoustamnike'' (Greek) was a Roman province of Egypt created during the 5th century and was part of the Diocese of Oriens first and then of the Diocese of Egypt, until the Muslim conquest of Egypt in the 640s. Som ...

Thebais The Thebaid or Thebais ( grc-gre, Θηβαΐς, ''Thēbaïs'') was a region in ancient Egypt, comprising the 13 southernmost nomes of Upper Egypt, from Abydos to Aswan. Pharaonic history The Thebaid acquired its name from its proximity to ...

, Libya Superior and

Libya Inferior Marmarica (Greek Μαρμαρική) in ancient geography was a littoral area in Ancient Libya, located between ''Cyrenaica'' and '' Aegyptus''. It corresponds to what is now the Libya and Egypt frontier, including the towns of Bomba (ancient ...

, which were grouped into the separate

Diocese of Egypt The Diocese of Egypt ( la, Dioecesis Aegypti; el, Διοίκησις Αἰγύπτου) was a diocese of the later Roman Empire (from 395 the Eastern Roman Empire), incorporating the provinces of Egypt and Cyrenaica. Its capital was at Alexandr ...

under

Valens Valens ( grc-gre, Ουάλης, Ouálēs; 328 – 9 August 378) was Roman emperor from 364 to 378. Following a largely unremarkable military career, he was named co-emperor by his elder brother Valentinian I, who gave him the eastern half of ...

(r. 364–378). During the course of the 4th century, several provinces were split, resulting in the new provinces of Cilicia I and Cilicia II, Syria I and Syria II Salutaris, Phoenice I and Phoenice II Libanensis (east of Mt. Lebanon),

Palaestina I Palaestina Prima or Palaestina I was a Byzantine province that existed from the late 4th century until the Muslim conquest of the Levant in the 630s, in the region of Palestine. It was temporarily lost to the Sassanid Empire (Persian Empire) in ...

Palaestina II Palæstina Secunda or Palaestina II was a Byzantine province from 390, until its conquest by the Muslim armies in 634–636. Palaestina Secunda, a part of the Diocese of the East, roughly comprised the Galilee, Yizrael Valley, Bet Shean Valley a ...

and

Palaestina Salutaris Palaestina Salutaris or Palaestina Tertia was a Byzantine (Eastern Roman) province, which covered the area of the Negev, Sinai (except the north western coast) and south-west of Transjordan, south of the Dead Sea. The province, a part of the Dio ...

(or Palaestina III). The last creation of a new province dated in the reign of

Justinian I Justinian I (; la, Iustinianus, ; grc-gre, Ἰουστινιανός ; 48214 November 565), also known as Justinian the Great, was the Byzantine emperor from 527 to 565. His reign is marked by the ambitious but only partly realized ''renova ...

(r. 527–565), when Theodorias, the region around Laodicea, was split off from Syria I. At about the same time, Cyprus was split off and became part of a new super-province, the ''

quaestura exercitus The ''quaestura exercitus'' was an administrative district of the Eastern Roman Empire with a seat in Odessus (present-day Varna) established by Emperor Justinian I (r. 527–565) on May 18, 536. Territorially, the ''quaestura exercitus'' contain ...

''. In 535, as part of his administrative reforms, Justinian I abolished the diocese, and the ''comes Orientis'' became the provincial governor of Syria I, while retaining his previous rank of ''

vir spectabilis The title ''vir illustris'' ('illustrious man') is used as a formal indication of standing in late antiquity to describe the highest ranks within the senates of Rome and Constantinople. All senators had the title ''vir clarissimus'' ('very famous ...

'' and his salary. The entire area of the former diocese came under

Sassanid Persia The Sasanian () or Sassanid Empire, officially known as the Empire of Iranians (, ) and also referred to by historians as the Neo-Persian Empire, was the last Iranian empire before the early Muslim conquests of the 7th-8th centuries AD. Named ...

n occupation in the 610s and 620s, during the Byzantine–Sassanid War of 602–628. Shortly after the Byzantine victory in the war and the recovery of the region, it was again lost, this time permanently, to the

Muslim conquests The early Muslim conquests or early Islamic conquests ( ar, الْفُتُوحَاتُ الإسْلَامِيَّة, ), also referred to as the Arab conquests, were initiated in the 7th century by Muhammad, the main Islamic prophet. He estab ...

: by the 640s, Cilicia formed the border between Byzantium and the new Arab

Caliphate A caliphate or khilāfah ( ar, خِلَافَة, ) is an institution or public office under the leadership of an Islamic steward with the title of caliph (; ar, خَلِيفَة , ), a person considered a political-religious successor to th ...

, while Cyprus became a disputed territory. From the old provinces of the Diocese of the East, only Isauria and parts of the two Cilicias remained under Byzantine rule, grouped under the new Anatolic Theme.

List of ''Comites Orientis''

* Quintus Flavius Maesius Egnatius Lollianus (330–336) * Felicianus (335–?) *

Nebridius :''"Nebridius" was also the name of a close friend of Augustine of Hippo, who is mentioned in his letters.'' Saint Nebridius ( ca, Nebridi, es, Nebridio) was bishop of Egara (Terrassa) (516–527) and then bishop of Barcelona from 540 to aroun ...

(354–358) *

Domitius Modestus Domitius Modestus (''floruit'' 358–377) was a politician of the Roman Empire. He held appointments under the emperors Constantius II, Julian, and Valens, and was consul in 372. Previously a pagan, he converted to Arianism under Valens, and was ...

(358–362) * Iulianus (362–363) * Aradius Rufinus (363–364) * Eutolmius Tatianus (c. 370) * Tuscianus (381) * Philagrius (382) *

Proculus Proculus (died c. 281) was a Roman usurper, one of the "minor pretenders" according to ''Historia Augusta'', who would have taken the purple against Emperor Probus in 280. This is now disputed. Probably Proculus had family connection with the Fr ...

(383–384) * Icarius (c. 384) * Irenaeus (431–435) * Ephraim of Amida (c. 522–c. 525) * Asterius (587–588) * Bacchus (588–589) * Bonosus (c. 609–610)

References

{{coord missing, Asia

East East or Orient is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth. Etymology As in other languages, the word is formed from the fac ...

Late Roman Syria Byzantine Syria Praetorian prefecture of the East 314 establishments States and territories established in the 310s 535 disestablishments States and territories disestablished in the 530s