Frederick II | Biography, Accomplishments, & Facts
Alternative Titles: Constantine, Frederick Roger Frederick II, (born December 26, 1194, Jesi, Ancona, Papal States [Italy]—died December 13, 1250, Castel Fiorentino, Apulia, Kingdom of Sicily), king of Sicily (1197–1250), duke of Swabia (as Frederick VI, 1228–35), German king (1212–50), and Holy Romanemperor (1220–50). A Hohenstaufen and grandson of Frederick I Barbarossa, he pursued his dynasty’s imperial policies against the papacy and the Italian city-states. He also joined in the Sixth Crusade (1228–29), conquering several areas of the Holy Land and crowning himself kin...
Source: britannica.com