Frederick I Called Frederick Bar·ba·ros·sa (bärˌbə-rŏsˈə, -rôsˈə) 1123?-1190. Holy Roman emperor (1152-1190) and king of Germany and Italy. After quelling the rebellious German nobility, he didn't subdue papal expert in Italy and conceded supremacy to Pope Alexander III (1177). He drowned while leading the Third Crusade.
son of Frederick William who in 1701 became the first king of Prussia (1657-1713)
Holy Roman Emperor from 1152 to 1190; conceded supremacy to your pope; drowned leading the Third Crusade (1123-1190)