The Diocese of Pannonia ( la, Dioecesis Pannoniarum, lit. "Diocese of the Pannonias"), from 395 known as the Diocese of Illyricum, was a

diocese In Ecclesiastical polity, 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 Roman province, pro ...

of the Late

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 Mediterr ...

. The seat of the ''

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 ...

'' (governor of the diocese) was

Sirmium Sirmium was a city in the Roman province of Pannonia, located on the Sava river, on the site of modern Sremska Mitrovica in the Vojvodina autonomous provice of Serbia. First mentioned in the 4th century BC and originally inhabited by Illyrians an ...

History

It was originally part of the

praetorian prefecture of Italy The praetorian prefecture of Italy ( la, Praefectura praetorio Italiae, in its full form (until 356) ) was one of four praetorian prefectures into which the Late Roman Empire was divided. It comprised the Italian peninsula, the Western Balkans, ...

and was incorporated by the

praetorian prefecture of Illyricum The praetorian prefecture of Illyricum ( la, praefectura praetorio per Illyricum; el, ἐπαρχότης/ὑπαρχία �ῶν πραιτωρίωντοῦ Ἰλλυρικοῦ, also termed simply the Prefecture of Illyricum) was one of four ...

when it was established in 347. Disputed by the two halves of the Empire in the following years, the Diocese of Pannonia was one of the two dioceses in the eastern quarters of the

Tetrarchy The Tetrarchy was the system instituted by Roman emperor Diocletian in 293 AD to govern the ancient Roman Empire by dividing it between two emperors, the '' augusti'', and their juniors colleagues and designated successors, the '' caesares' ...

not belonging to the cultural Greek half of the empire (the other was

Dacia Dacia (, ; ) was the land inhabited by the Dacians, its core in Transylvania, stretching to the Danube in the south, the Black Sea in the east, and the Tisza in the west. The Carpathian Mountains were located in the middle of Dacia. It thus r ...

), and so it was transferred back to the Western Empire at the death of

Theodosius I Theodosius I ( grc-gre, Θεοδόσιος ; 11 January 347 – 17 January 395), also called Theodosius the Great, was Roman emperor from 379 to 395. During his reign, he succeeded in a crucial war against the Goths, as well as in two ...

in 395 and was joined to the Prefecture of Italy as the ''Diocese of Illyricum''. In 425

Galla Placidia Galla Placidia (388–89/392–93 – 27 November 450), daughter of the Roman emperor Theodosius I, was a mother, tutor, and advisor to emperor Valentinian III, and a major force in Roman politics for most of her life. She was List of Visigothi ...

gave the diocese of Illyricum to Eastern Emperor

Theodosius II Theodosius II ( grc-gre, Θεοδόσιος, Theodosios; 10 April 401 – 28 July 450) was Roman emperor for most of his life, proclaimed ''Augustus (title), augustus'' as an infant in 402 and ruling as the eastern Empire's sole emperor after ...

. Its ultimate fate is uncertain. Pannonia was lost to the

Huns The Huns were a nomadic people who lived in Central Asia, the Caucasus, and Eastern Europe between the 4th and 6th century AD. According to European tradition, they were first reported living east of the Volga River, in an area that was part ...

in the 440s, although Dalmatia was retained by the Western Empire until c. 480. The Ostrogoth king of Italy

Theodoric the Great Theodoric (or Theoderic) the Great (454 – 30 August 526), also called Theodoric the Amal ( got, , *Þiudareiks; Greek: , romanized: ; Latin: ), was king of the Ostrogoths (471–526), and ruler of the independent Ostrogothic Kingdom of Italy b ...

conquered Pannonia in the late 5th century, possibly reestablishing the diocese.

Structure

The Diocese of Pannonia (Diocese of Illyricum occidentalis) included the

Roman province The Roman provinces (Latin: ''provincia'', pl. ''provinciae'') were the administrative regions of Ancient Rome outside Roman Italy that were controlled by the Romans under the Roman Republic and later the Roman Empire. Each province was rule ...

s of

Pannonia Prima Pannonia Prima was an ancient Roman province. It was formed in the year 296, during the reign of Emperor Diocletian. Previously, it was a part of the province of Pannonia Superior, which, along with Pannonia Inferior, was gradually divided into f ...

Pannonia Valeria The Pannonia Valeria or simply Valeria, also known as Pannonia Ripensis, was one of the provinces of the Roman Empire. It was formed in the year 296, during the reign of emperor Diocletian, in a division of Pannonia Inferior. The capital of the pr ...

Pannonia Savia Pannonia Savia or simply Savia, also known as Pannonia Ripariensis, was a Late Roman province. It was formed in the year 295, during the Tetrarchy reform of Roman emperor Diocletian, and assigned to the civil diocese of Pannonia, which was atta ...

Pannonia Secunda Pannonia Secunda was one of the provinces of the Roman Empire. It was formed in the year 296, during the reign of emperor Diocletian. The capital of the province was Sirmium (today Sremska Mitrovica). Pannonia Secunda included parts of present-day ...

, Noricum Mediterraneum, Noricum Ripensis and

Dalmatia Dalmatia (; hr, Dalmacija ; it, Dalmazia; see #Name, names in other languages) is one of the four historical region, historical regions of Croatia, alongside Croatia proper, Slavonia, and Istria. Dalmatia is a narrow belt of the east shore of ...

. Also under its jurisdiction were the

Exarch An exarch (; from Ancient Greek ἔξαρχος ''exarchos'', meaning “leader”) was the holder of any of various historical offices, some of them being political or military and others being ecclesiastical. In the late Roman Empire and ea ...

, the

Metropolis A metropolis () is a large city or conurbation which is a significant economic, political, and cultural center for a country or region, and an important hub for regional or international connections, commerce, and communications. A big c ...

Lauriacum Map of the Danubeian Limes. Reconstruction of the camp and adjoining oppidium.Lauriacum was an important legionary Roman town on the Danube Limes in Austria. History Roman Era Where only a small Roman settlement was located at a ford over the ...

, Vindomana,

Salona Salona ( grc, Σάλωνα) was an ancient city and the capital of the Roman province of Dalmatia. Salona is located in the modern town of Solin, next to Split, in Croatia. Salona was founded in the 3rd century BC and was mostly destroyed in t ...

, Salisburgium and the "''locus incertus''" (the "''unknown location''", see:

Miholjanec Miholjanec is a village in Croatia and one of the oldest settlements in the country. History Ancient times Miholjanec has been settled since at least the Iron Age. During the late Iron Age, the so-called ''bini populi'' ("two people") lived in t ...

List of known Vicars

* Valerius Licinius (308-314).

Later usage of the term

In the 9th century, ''Diocese of Pannonia'' was also a name of the ecclesiastical territory of the

Christian church In ecclesiology, the Christian Church is what different Christian denominations conceive of as being the true body of Christians or the original institution established by Jesus. "Christian Church" has also been used in academia as a synonym fo ...

whose archbishop was Saint Methodius.Cyrillus and Methodius, the Apostles of the Slavsl
/ref>

References

Literature

* * * * * * *

External links

Illyricum
{{Late Roman Provinces, state=collapsed

Pannonia Praetorian prefecture of Illyricum Praetorian prefecture of Italy Illyricum (Roman province) Austria in the Roman era Bosnia and Herzegovina in the Roman era Croatia in the Roman era Dalmatia (Roman province) Hungary in the Roman era Serbia in the Roman era Slovenia in the Roman era Ancient history of Vojvodina History of Syrmia Historical regions of Bosnia and Herzegovina Historical regions in Slovenia 314 establishments States and territories established in the 310s 4th-century establishments in the Roman Empire 440s disestablishments 5th-century disestablishments in the Roman Empire