Passau

Passau was an ecclesiastical principality of the Holy Roman Empire at the meeting of the Danube, Inn and Ilz. In 1337 it was ruled by Bishop Albert of Saxony, appointed by Pope John XXII.

During the Reformation Bishop Ernest of Bavaria kept the Bavarian part Catholic while Lutheranism spread in Austrian lands. The Peace of Passau was concluded in the city in 1552. The prince-bishopric was secularized in 1803, and the city passed to Bavaria.