Kingdom of Sicily

The Kingdom of Sicily was a kingdom that existed in southern Italian Peninsula, what is now Sicily, Calabria, Basilicata, Apulia, Campania, and Molise.
History.
Norman conquest.
The Kingdom of Sicily succeeded the County of Sicily which was created in 1071 during the Norman conquest of the peninsula. 
Angevin rule.
In 1282, there was a revolt against the Angevin rule, it threw off Charles of Anjou's rule of Sicily. The Angevins are able to maintain control in the main part of the kingdom which became commonly known as the Kingdom of Naples, named after its capital, Naples.
Crown of Aragon.
From 1282 to 1409, Sicily was ruled by the Crown of Aragon. After 1302, the island kingdom was sometimes called the "Kingdom of Trinacria", In 1816, the Kingdom of Sicily merged with the Kingdom of Naples to form the Kingdom of the Two Sicilies.
Kingdom of the Two Sicilies.
In 1861, the Kingdom of the Two Sicilies was invaded and conquered by an Expedition Corp (Expedition of the Thousand) led by Giuseppe Garibaldi during the Italian unification. After a referendum, Two Sicilies was annexed by the Kingdom of Sardinia. Later, with several other northern city-states and duchies, formed the new Kingdom of Italy.