This man oversaw the hanging of Arnold of Brescia and forced Eugenius III to sign the Treaty of Constance. He convened the Diet of Roncaglia, and, according to legend, is sleeping in Kyffhauser Castle. This nephew of Conrad III was opposed by Henry the Lion and was defeated 
This man oversaw the hanging of Arnold of Brescia and forced Eugenius III to sign the Treaty of Constance. He convened the Diet of Roncaglia, and, according to legend, is sleeping in Kyffhauser Castle. This nephew of Conrad III was opposed by Henry the Lion and was defeated at Legnano by the (*) Lombard League. This man was crowned by Pope Adrian IV in 1155, and drowned while trying to cross the Saleph River during the Third Crusade. For 10 points, name this Swabian Holy Roman Emperor who had a red beard.
This man oversaw the hanging of Arnold of Brescia and forced Eugenius III to sign the Treaty of Constance.
Frederick Barbarossa [or Frederick I Hohenstaufen; or Frederick III of Swabia; prompt on