Facts and Events
He succeed his father at the age of four, under the guardianship of his mother. He married princess Gisela of Burgundy, and resolved in 974 to oust Otto II from the throne of Germany. However, he was taken captive in Ingelheim - he escaped and instigated a revolt in Bavaria, but was defeated in 976 and stripped of his Duchy, and, following the War of the Three Henries in 978, was placed under the custody of the Bishop of Utrecht. As a consequence of his revolt Bavaria lost her first southeastern marches including Austria.
After Otto's death he was released from captivity and tried once again to usurp the German throne, abducting the infant Otto III. Although he failed in his attempt to gain control of Germany, he did regain Bavaria.