Kingdom of Naples
The Kingdom of Naples (Neapolitan: Regno 'e Napule, Italian: Regno di Napoli), comprising the southern part of the Italian Peninsula, was the remainder of the old Kingdom of Sicily after the secession of the island of Sicily as a result of the Vespers of 1282. 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.
Angevin Kingdom of Naples
Following the rebellion in 1282, King Charles I of Sicily (Charles of Anjou) was forced to leave the island of Sicily by Peter III of Aragon's 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, when Queen Joan I of Naples formally renounced the claim by the Treaty of Villeneuve. Joan's reign was contested by Louis the Great, the Angevin King of Hungary, who captured the kingdom several times (1348–1352).