It continued to be officially known as the Kingdom of Sicily, although it no longer included the island of Sicily. For much of its existence, the realm was contested between French and Spanish dynasties, in 1816, it was reunified with the island kingdom of Sicily once again to form the Kingdom of the Two Sicilies. Following the rebellion in 1282, King Charles I of Sicily was forced to leave the island of Sicily by Peter III of Aragons troops, Charles, however, maintained his possessions on the mainland, customarily known as the Kingdom of Naples, after its capital city. Charles and his Angevin successors maintained a claim to Sicily, warring against the Aragonese until 1373, joans reign was contested by Louis the Great, the Angevin King of Hungary, who captured the kingdom several times. Queen Joan I also played a part in the demise of the first Kingdom of Naples. This led to Joan Is murder at the hands of the Prince of Durazzo in 1382, the two competing Angevin lines contested each other for the possession of the Kingdom of Naples over the following decades. René of Anjou temporarily united the claims of junior and senior Angevin lines, in 1442, however, Alfonso V conquered the Kingdom of Naples and unified Sicily and Naples once again as dependencies of Aragon. At his death in 1458, the kingdom was again separated and Naples was inherited by Ferrante, Alfonsos illegitimate son. Charles VIII expelled Alfonso II of Naples from Naples in 1495, Ferrantino was restored to the throne, but died in 1496, and was succeeded by his uncle, Frederick IV. Charles VIIIs successor, Louis XII reiterated the French claim, in 1501, he occupied Naples and partitioned the kingdom with Ferdinand of Aragon, who abandoned his cousin King Frederick. The deal soon fell through, however, and Aragon and France resumed their war over the kingdom, the Spanish troops occupying Calabria and Apulia, led by Gonzalo Fernandez de Cordova did not respect the new agreement, and expelled all Frenchmen from the area. The peace treaties that continued were never definitive, but they established at least that the title of King of Naples was reserved for Ferdinands grandson, the future Charles V, Holy Roman Emperor. Ferdinand nevertheless continued in possession of the kingdom, being considered as the heir of his uncle Alfonso I of Naples. The French finally abandoned their claims to Naples by the Treaty of Cateau-Cambrésis in 1559, in the Treaty of London, five cities on coast of Tuscany were designated the Stato dei Presidi, and part of the Kingdom of Naples. After the War of the Spanish Succession in the early 18th century, under the terms of the Treaty of Rastatt in 1714, Naples was given to Charles VI, the Holy Roman Emperor. He also gained control of Sicily in 1720, but Austrian rule did not last long, when Charles inherited the Spanish throne from his older half-brother in 1759, he left Naples and Sicily to his younger son, Ferdinand IV. Despite the two Kingdoms being in a union under the Habsburg and Bourbon dynasts, they remained constitutionally separate. Being a member of the House of Bourbon, Ferdinand IV was an opponent of the French Revolution and Napoleon
Provinces of the "Kingdom of Naples"
The territory of the Kingdom of Naples superimposed over an administrative map of modern Italy