In 1266, conflict between the Hohenstaufen house and the Papacy led to Sicily's conquest by Charles I, Duke of Anjou. Opposition to French officialdom and taxation combined with incitement of rebellion by agents from the Byzantine Empire and the Crown of Aragon led to the Sicilian Vespers insurrection and successful invasion 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 Aragon, who had been ruling it. The peninsular territories, contemporaneously called Kingdom of Sicily, but called 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". Despite the king of Spain being able to seize both the two crowns starting from 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.