Duchy of Tridentum

[3] Euin was at the head of the army loyal to Authari that went into the territory of the duke of Friuli in Istria, c 589, and he was sent by Agilulf to make peace with the Franks his neighbors, in 591.

With the collapse of the Lombard kingdom in 773–74, the duchy of Tridentum passed into Frankish control and was transformed.

After German king Otto I had subdued the Italian kingdom in 952 he incorporated Tridentum into the March of Verona.

Its strategic position controlling the Alpine mountain passes encouraged the eleventh-century Holy Roman Emperors to invest the Bishop Ulrich II of Trent with temporal powers over a sizable territory,[7] as an independent prince of the Empire, with the powers and privileges of a duke.

A succession of Prince-Bishops ruled, except for a few short intervals,[8] until 1802, when the bishopric was secularized and became a part of Austrian Tyrol.