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| Diocese of Pontus Dioecesis Pontica Διοίκησις Πόντου | |
|---|---|
| Diocese of theRoman Empire | |
| 314–535 548–7th century | |
 The Diocese of Pontus c. 400. | |
| Capital | Amaseia |
| Historical era | Late Antiquity |
• Established | 314 |
• replaced by thetheme system | 660s |
| Today part of | Turkey |
TheDiocese of Pontus (Latin:Dioecesis Pontica,Greek:Διοίκησις Πόντου/Ποντικῆς) was adiocese of the laterRoman Empire, incorporating the provinces of northern and northeasternAsia Minor up to the border with theSassanid Empire inArmenia.[1] The diocese was established after the reforms ofDiocletian, and itsvicarius, headquartered atAmaseia, was subordinate to thePraetorian prefecture of the East. Its military forces, facing the Sassanid threat, were commanded by thedux Ponti et Armeniae until the middle of the 5th century, and by two separateduces afterwards, untilJustinian I instituted a newmagister 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 thethemata ofArmeniakon andOpsikion in the later 7th century.[1]On the north east shore of the Black Sea, the citiesNitike,Pitiyus, andDioscurias were part of the diocese until the 7th century.The diocese included 12 provinces:Bithynia,Honorias,Paphlagonia,Helenopontus,Pontus Polemoniacus,Galatia I andGalatia II (Salutaris),Cappadocia I andCappadocia II,Armenia I,Armenia II,Armenia Maior and the autonomous Armenian principalities (Satrapiae) in the area ofSophene. In 536,Armenia III andArmenia IV were created.
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