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Angevin Sicily (1266–1282)

In 1266, conflict between the Hohenstaufen house and the Papacy led to Sicily's conquest by Charles I, Duke of Anjou. With the usurpation of the Sicilian throne from Conradin by Manfred of Sicily in 1258, the relationship between the Papacy and the Hohenstaufen had changed again. Instead of the boy Conradin, safely sequestered across the Alps, the Papacy now faced an able military leader who had greatly supported the Ghibelline cause at the Battle of Montaperti in 1260. Accordingly, when negotiations broke down with Manfred in 1262, Pope Urban IV again took up the scheme of disseising the Hohenstaufen from the kingdom, and offered the crown to Charles of Anjou again. With Papal and Guelph support Charles descended into Italy and defeated Manfred at the Battle of Benevento in 1266 and in 1268 Conradin at the Battle of Tagliacozzo.

Opposition to French officialdom and taxation combined with incitement of rebellion by agents from the Crown of Aragon and the Byzantine Empire led to the successful insurrection of the Sicilian Vespers followed by the invitation and intervention by King Peter III of Aragon in 1282. The resulting War of the Sicilian Vespers lasted until the Peace of Caltabellotta in 1302, dividing the old Kingdom of Sicily in two. The island of Sicily, called the "Kingdom of Sicily beyond the Lighthouse" or the Kingdom of Trinacria, went to Frederick III of the House of Barcelona, who had been ruling it. The peninsular territories (the Mezzogiorno), contemporaneously called the Kingdom of Sicily but called the Kingdom of Naples by modern scholarship, went to Charles II of the House of Anjou, who had likewise been ruling it. Thus, the peace was formal recognition of an uneasy status quo. The division in the kingdom became permanent in 1372, with the Treaty of Villeneuve. Though the king of Aragon was able to seize both crowns in the 16th century, the administrations of the two halves of the Kingdom of Sicily remained separated until 1816, when they were reunited in the Kingdom of Two Sicilies.