Charles II (born c. 1254—died May 5, 1309, Naples) was the king of Naples and ruler of numerous other territories, who concluded the war to regain Sicily started by his father, Charles I. By making astute alliances and treaties, he greatly enlarged his dominions.
Named prince of Salerno (1269) by his father and married by him to Maria, daughter of the king of Hungary (1270), Charles was engaged in acquiring more lands and titles when his father lost Sicily to the Aragonese (1282). When Charles I initiated his ill-fated campaign to regain Sicily, Charles of Salerno was in charge of Naples during his father’s absence. In 1284, he was lured out of the port of Naples by the enemy’s admiral, Ruggiero di Lauria, and was captured.
Charles I died (1285) during his son’s imprisonment, and it was not until 1288 that Charles II was able to arrange his release, using Edward I of England and Pope Nicholas IV as intermediaries. Charles promised to give up his claim to Sicily, but, once released, the Pope absolved him from his promise and the war for Sicily continued. It was resolved by the Peace of Caltabellotta (1302), under which Charles agreed to give up his claim to Sicily during the lifetime of Frederick III of Aragon (ruled Sicily 1296–1337).
Thenceforth Charles carefully built up an extremely complex set of alliances, usually by arranging the marriages of his children. In that way he increased or extended his control over Piedmont, Provence, Hungary, Athens, and Albania, among other territories.
Charles was considered an extremely pious man, closely allied with the church. Ruling over an enlightened court, he eliminated many of his father’s harsh measures. He is also noted for making Naples into something of a European capital by fostering trade and the arts, patronizing the university, and building monasteries and churches.