Diocese of Dacia

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Diocese of Dacia
Dioecesis Daciarum
Διοίκησις Δακίας
Diocese of the Roman Empire
ca. 337 – ca. 602
Location of Diocese of Dacia
Dacia and Illyria in 400 AD
Capital Serdica (modern Sofia)
Historical era Late Antiquity
 •  Split from Diocese of Moesia ca. 337
 •  Merged into the newly formed Praetorian prefecture of Illyricum 357
 •  Merged into the Praetorian prefecture of Italy 384
 •  Merged back into Illyricum after Theodosius' death 395
 •  Devastated by the Avars ca. 602

The Diocese of Dacia (Latin: Dioecesis Daciae) was a diocese of the later Roman Empire, in the area of modern western Bulgaria, central Serbia, Montenegro, northern Albania and northern Republic of Macedonia. It was subordinate to the Praetorian prefecture of Illyricum. Its capital was at Serdica (modern Sofia).

History[edit]

Roman Empire with dioceses in 300 AD
Roman Empire with dioceses in 400 AD
Map of the northern Balkans in the 6th century, including the Diocese of Dacia and its provinces.

Origin of the name[edit]

Emperor Aurelian (270-275), confronted with the secession of Gallia and Hispania from the empire since 260, with the advance of the Sassanids in Asia, and the devastations that the Carpians and the Goths had created in Moesia and Illyria, abandoned the province of Dacia created by Trajan and withdrew his troops altogether, fixing the Roman frontier at the Danube. A new Dacia Aureliana was organised south of the Danube out of central Moesia, with its capital at Serdica.

The abandonment of Dacia Traiana by the Romans is mentioned by Eutropius in his Breviarium historiae Romanae, book IX :

Creation[edit]

During the administrative reforms of Diocletian (284-305), the Diocese of Moesia was created, encompassing most of the central Balkans and the Greek peninsula. Later, however, probably in the time of Constantine the Great (306-337) the diocese was split in two, forming the Diocese of Macedonia in the south and the Diocese of Dacia, in the north.

The Diocese of Dacia was composed of five provinces: Dacia Mediterranea (the southern, interior portion of Dacia Aureliana), Dacia Ripensis (the northern, Danubian portion of Dacia Aureliana), Moesia Prima (the northern portion of Moesia Superior), Dardania (the southern portion of Moesia Superior) and Praevalitana (the eastern portion of Dalmatia).

The dioceses capital was at Serdica (modern Sofia). Administration of diocese was headed by a vicarius. According to the Notitia dignitatum (an early 5th century imperial chancery document), the vicarius had the rank of vir spectabilis.

The diocese was transferred to the Western Empire in 384 by Theodosius I, probably in partial compensation to the empress Justina for his recognition of the usurpation of Magnus Maximus in the Gallic Empire. However, upon his death in 395, it reverted to the Eastern Empire, forming, together with the Diocese of Macedonia to the south, the Praetorian prefecture of Illyricum.

Destruction[edit]

The territory of diocese was devastated by the Huns in the middle of 5th century and finally overrun by the Avars and Slavs in late 6th and early 7th century.

See also[edit]

Sources[edit]

External links[edit]