Rottmayr, who came from Laufen in Upper Bavaria, trained under Johann Carl Loth (1632–1698) in Venice and was court painter in Salzburg and Vienna, depicts the legend of Benno, the Bishop of Meissen (ca. 1010–1106), who was deprived of his bishopric due to the conflict over the right to appoint bishops. Upon his departure Benno reputedly locked the cathedral and threw the keys in the Elbe. This picture shows his return, pointing to the keys that had been found in the stomach of a fish in the river. Benno was canonised in 1523 and became the patron saint of Bavaria and Munich in 1580.