Electorate of Trier

The Electorate of Trier was an ecclesiastical principality and archdiocese within the Holy Roman Empire, existing from the late 9th century until the early 19th century. Founded in 898, it was the temporal possession of the prince-archbishop of Trier, who also served as a prince-elector of the empire. Its capital was Trier, though from the 16th century, the Elector's main residence was in Koblenz. The Electorate of Trier was dissolved on November 29, 1801, and was secularized in 1803 during the German mediatisation.