One enemy of this man attempted to annex Urbino with the support of Pope Adrian IV.
One enemy of this man attempted to annex Urbino with the support of Pope Adrian IV. This opponent of William Hauteville of Sicily was the target of the Diet of Roncaglia, which mustered an army that defeated him at the Battle of Legnano. This man journeyed with Phillip II Augustus after taking up the cross at the Diet of Mainz. While bathing, this opponent of the Lombard League forgot to take off his armor and drowned in the Saleph River while on the Third Crusade. For 10 points, name this Holy Roman Emperor whose nickname denoted his colorful beard.
One enemy of this man attempted to annex Urbino with the support of Pope Adrian IV.
Frederick Barbarossa [or Frederick I; prompt on Frederick]