 He asserted this important post for the first time in 1190 at the coronation of Emperor Henry VI, but spoiled his good terms with the Emperor through his opposition to turning over the hereditary German crown to the House of Hohenstaufen.In 1198 he supported Philipp of Swabia as Emperor.Philipp was killed on 21 June 1208 by Otto of Wittelsbach at Altenburg in Bamberg.