Boemiae by Fr. Gelasius Dobner (1764) Secondary sources Manselli, Raoul, and Josef Riedmann, eds. Federico Barbarossa nel dibattito storiografico in Italia e in Germania. Bologna: Il Mulino, 1982. External links MSN Encarta – Frederick I (Holy Roman Empire) (Archived 2009-10-31) Famous Men of the Middle Ages – Frederick Barbarossa Charter given by Emperor Frederick for the bishopric of Bamberg showing the Emperor's seal, 6 April 1157. Taken from the collections of the Lichtbildarchiv älterer Originalurkunden at Marburg University 1122 births 1190 deaths 12th-century Holy Roman Emperors 12th-century Kings of the Romans Christians of the Second Crusade Christians of the Third Crusade Deaths by drowning Dukes of Swabia Hohenstaufen People from Haguenau People temporarily excommunicated by the Catholic Church