Diocese of Pontus

Diocese of the Roman Empire

Dioecesis Pontica
Διοίκησις Πόντου

Diocese of the Roman Empire314–535
548–7th century

The Diocese of Pontus c. 400.CapitalAmaseiaHistorical eraLate Antiquity

• Established

314

• replaced by the theme system

660s Today part of

Turkey

The Diocese of Pontus (Latin: Dioecesis Pontica, Greek: Διοίκησις Πόντου/Ποντικῆς) was a diocese of the later Roman Empire, incorporating the provinces of northern and northeastern Asia Minor up to the border with the Sassanid Empire in Armenia.^[1] The diocese was established after the reforms of Diocletian, and its vicarius, headquartered at Amaseia, was subordinate to the Praetorian prefecture of the East. Its military forces, facing the Sassanid threat, were commanded by the dux Ponti et Armeniae until the middle of the 5th century, and by two separate duces afterwards, until Justinian I instituted a new magister militum per Armeniam for the Armenian frontier.^[1] Justinian's reforms also abolished the diocese in 535, and its vicar was made into the governor of Galatia I. The results however were not satisfactory, and the diocese was reestablished in 548, continuing to function until replaced by the themata of Armeniakon and Opsikion in the later 7th century.^[1] On the north east shore of the Black Sea, the cities Nitike, Pitiyus, and Dioscurias were part of the diocese until the 7th century. The diocese included 12 provinces: Bithynia, Honorias, Paphlagonia, Helenopontus, Pontus Polemoniacus, Galatia I and Galatia II (Salutaris), Cappadocia I and Cappadocia II, Armenia I, Armenia II, Armenia Maior and the autonomous Armenian principalities (Satrapiae) in the area of Sophene. In 536, Armenia III and Armenia IV were created.

References

^ ^a ^b ^c Kazhdan, Alexander, ed. (1991). Oxford Dictionary of Byzantium. Oxford University Press. p. 1697. ISBN 978-0-19-504652-6.

Late Roman and early Byzantine provinces (4th–7th centuries AD)

History
As found in the Notitia Dignitatum. Provincial administration reformed and dioceses established by Diocletian, c. 293. Permanent praetorian prefectures established after the death of Constantine I. Empire permanently partitioned after 395. Exarchates of Ravenna and Africa established after 584. After massive territorial losses in the 7th century, the remaining provinces were superseded by the theme system in c. 640–660, although in Asia Minor and parts of Greece they survived under the themes until the early 9th century.

History

As found in the Notitia Dignitatum. Provincial administration reformed and dioceses established by Diocletian, c. 293. Permanent praetorian prefectures established after the death of Constantine I. Empire permanently partitioned after 395. Exarchates of Ravenna and Africa established after 584. After massive territorial losses in the 7th century, the remaining provinces were superseded by the theme system in c. 640–660, although in Asia Minor and parts of Greece they survived under the themes until the early 9th century.

Western Roman Empire (395–476)

Praetorian prefecture
of Gaul

Diocese of Gaul	Alpes Poeninae et Graiae Belgica I Belgica II Germania I Germania II Lugdunensis I Lugdunensis II Lugdunensis III Lugdunensis IV Maxima Sequanorum
Diocese of Vienne¹	Alpes Maritimae Aquitanica I Aquitanica II Narbonensis I Narbonensis II Novempopulania Viennensis
Diocese of Spain	Baetica Balearica Carthaginensis Gallaecia Lusitania Mauretania Tingitana Tarraconensis
Diocese of the Britains	Britannia I Britannia II Flavia Caesariensis Maxima Caesariensis Valentia (?)

Praetorian prefecture
of Italy

Diocese of Suburbicarian Italy	Apulia et Calabria Campania Corsica Lucania et Bruttii Picenum Suburbicarium Samnium Sardinia Sicilia Tuscia et Umbria Valeria
Diocese of Annonarian Italy	Alpes Cottiae Flaminia et Picenum Annonarium Liguria et Aemilia Raetia I Raetia II Venetia et Histria
Diocese of Africa²	Africa proconsularis (Zeugitana) Byzacena Mauretania Caesariensis Mauretania Sitifensis Numidia (divided as Cirtensis and Militiana during the Tetrarchy) Tripolitania (Roman province)

Eastern Roman Empire (395–c. 640)

Praetorian prefecture
of Illyricum

Diocese of Pannonia³	Dalmatia Noricum mediterraneum Noricum ripense Pannonia I Pannonia II Savia Valeria ripensis
Diocese of Dacia	Dacia Mediterranea Dacia Ripensis Dardania Moesia I Praevalitana
Diocese of Macedonia	Achaea Creta Epirus Nova Epirus Vetus Macedonia Prima Macedonia II Salutaris Thessalia

Praetorian prefecture
of the East

Diocese of Thrace⁵	Europa Haemimontus Moesia II⁴ Rhodope Scythia⁴ Thracia
Diocese of Asia⁵	Asia Caria⁴ Hellespontus Islands⁴ Lycaonia (370) Lycia Lydia Pamphylia Pisidia Phrygia Pacatiana Phrygia Salutaris
Diocese of Pontus⁵	Armenia I⁵ Armenia II⁵ Armenia Maior⁵ Armenian Satrapies⁵ Armenia III (536) Armenia IV (536) Bithynia Cappadocia I⁵ Cappadocia II⁵ Galatia I⁵ Galatia II Salutaris⁵ Helenopontus⁵ Honorias⁵ Paphlagonia⁵ Pontus Polemoniacus⁵
Diocese of the East⁵	Arabia Cilicia I Cilicia II Cyprus⁴ Euphratensis Isauria Mesopotamia Osroene Palaestina I Palaestina II Palaestina III Salutaris Phoenice I Phoenice II Libanensis Syria I Syria II Salutaris Theodorias (528)
Diocese of Egypt⁵	Aegyptus I Aegyptus II Arcadia Augustamnica I Augustamnica II Libya Superior Libya Inferior Thebais Superior Thebais Inferior

Other territories
Taurica Quaestura exercitus (536) Spania (552)

¹ Later the Septem Provinciae
² Re-established after reconquest by the Eastern Empire in 534 as the separate Prefecture of Africa
³ Later the Diocese of Illyricum
⁴ Placed under the Quaestura exercitus in 536
⁵ Affected (i.e. boundaries modified, abolished or renamed) by Justinian I's administrative reorganization in 534–536