Patriarchate of Aquileia: Map & History
The Patriarchate of Aquileia was an episcopal see and ecclesiastical province in northeastern Italy, originally centered in the ancient city of Aquileia, situated near the northern coast of the Adriatic Sea.
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The Patriarchate of Aquileia was an episcopal see and ecclesiastical province in northeastern Italy, originally centered in the ancient city of Aquileia, situated near the northern coast of the Adriatic Sea. It emerged in the 4th century as a metropolitan province, with jurisdiction over the Italian region of Venetia et Histria. In the second half of the 6th century, metropolitan bishops of Aquileia started to use the patriarchal title. Their residence was moved to Grado in 568, after the Lombard conquest of Aquileia. In 606, an internal schism occurred, and since that time there were two rival lines of Aquileian patriarchs: one in New Aquileia (Grado) with jurisdiction over the Byzantine-controlled coastal regions, and the other in Old Aquileia. The first line (Grado) continued until 1451, while the second line continued until 1751. Patriarchs of the second line were also feudal lords of the Patriarchal State of Aquileia. A number of Aquileian church councils were held during the late antiquity and throughout the middle ages. Today, it is a titular archiepiscopal see.
Patriarchate of Aquileia in Depth
History
Ancient tradition asserts that the see was founded by St. Mark, sent there by St. Peter, prior to his mission to Alexandria. St. Hermagoras is said to have been its first bishop and to have died a martyr's death (c. 70). At the end of the third century (285) another martyr, St. Helarus (or St. Hilarius), was bishop of Aquileia.
In the course of the fourth century the city was the chief ecclesiastical centre for the region of the head of the Adriatic, Regio X of the Roman emperor Augustus' eleven regions of Italy, "Venetia et Histria". In 381, St. Valerian appeared as Metropolitan bishop of the churches in this territory; his synod of that year, held against the Arians, was attended by 32 (or 24) bishops.
Sections adapted from Wikipedia: Patriarchate of Aquileia (CC BY-SA 4.0).
Patriarchate of Aquileia Map Over Time
Dated world maps on which Patriarchate of Aquileia appears, with the other states of the time.
Patriarchate of Aquileia Timeline
Key historical inflections from foundation to peak territorial expansion
Expansion to peak recorded area of 9,006 km² in 1282 CE.
Patriarchate of Aquileia: Frequently Asked Questions
When did Patriarchate of Aquileia exist?
Patriarchate of Aquileia is dated to 1260 CE – 1449 CE, in the High & Late Middle Ages era.
How large was Patriarchate of Aquileia at its peak?
At its peak in 1282 AD Patriarchate of Aquileia covered about 9,006 km².
How did the map of Patriarchate of Aquileia change over time?
Patriarchate of Aquileia appears on 2 dated world maps in the atlas, from 1300 CE to 1400 CE. Each shows its borders in that year next to the other states of the time.
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