Charles I (born March 1226—died Jan. 7, 1285, Foggia, Kingdom of Naples [Italy]) was the king of Naples and Sicily (1266–85), the first of the Angevin dynasty, and creator of a great but short-lived Mediterranean empire.
The younger brother of Louis IX of France, Charles acquired the county of Provence in 1246 and accompanied Louis on his Egyptian Crusade (1248–50). Allied with the papacy, he conquered Naples and Sicily in the 1260s, defeating Manfred and Conradin, the last representatives of the Hohenstaufen dynasty, at Benevento (1266) and Tagliacozzo (1268). He thereafter expanded his power into the Balkans and in 1277 became heir to the Kingdom of Jerusalem.
Charles’s transfer of his capital from Palermo to Naples and his introduction of French officials caused discontent in Sicily, where rebellion broke out in 1282 (see Sicilian Vespers). Aided by Peter III of Aragon, the Sicilians expelled the Angevins, defeating Charles’s fleet in the Bay of Naples in June 1284. Charles was preparing a counteroffensive when he died.