Moreover, Duke Berthold fell out with King Henry IV during the fierce Investiture Controversy, when together with Duke Welf I of Bavaria he supported the election of his former rival Duke Rudolf of Swabia as antiking after Henry's Walk to Canossa in 1077.
Duke Berthold fell out with King Henry IV during the fierce Investiture Controversy. This was moreover. He supported the election of his former rival Duke Rudolf of Swabia as. He was antiking. Henry's Walk to Canossa in 1077.