Otto II sought continued peace between himself and the descendants of his uncle Henry I, Duke of Bavaria. To ensure domestic tranquillity, Otto II, on June 27, 973, granted his cousin, Henry II, Duke of Bavaria, control over the imperial castles in Bamberg and Stegaurach. This was not enough for the young Bavarian Duke, who wished to extend his influence in the Duchy of Swabia as his father had under Otto the Great. The death of Bishop Ulrich of Augsburg on July 4, 973, brought the conflict between the cousins to a head. Without consulting Otto II, Henry II named his cousin Henry as the new Bishop of Augsburg. Augsburg was located on the western side of the Swabian-Bavarian border, the territory of Henry II's brother-in-law Burchard III, Duke of Swabia. Henry's actions in naming a bishop in a duchy not his own and without Imperial direction brought him into conflict with both Otto II and Burchard III. Not desiring civil war, Otto II, on September 22, 973, invested Henry as bishop.