Originally posted on The Mad Monarchist.
The reign of the Spanish over southern Italy and the island of Sicily, in its last instance, can be traced back to their seizure from the Austrian Hapsburgs during the War of the Polish Succession. At that time, the son of King Philip V of Spain, Charles, was placed on the throne. He had previously been Duke of Parma before moving to Naples as part of the constant struggles and trade deals between the great powers over the states of the Italian peninsula. Eventually, he succeeded his brother as King Charles III of Spain (Carlos III) and so he passed the kingdoms of Naples and Sicily to one of his sons, Ferdinand, who had been born in Naples on January 12, 1751. He was to preside over a time of immense tumult, trepidation and transition in the history of southern Italy, ending ultimately in the creation of a new political entity called the Kingdom of the Two-Sicilies. Little Ferdinand was only in his eighth year when he became King Ferdinand IV of Naples and III of Sicily when his father became King of Spain. King Charles III was forbidden by treaty from continuing to rule over all three kingdoms personally so choosing his third son to succeed him in Naples was a way of ensuring that the Spanish Bourbon dynasty would still retain the crown.
Obviously, as a small child at the time, actual power remained in the hands of the King of Spain or those officials appointed by him to administer southern Italy. At the head of the local government was a council of regency led by…
via The Mad Monarchist: Monarch Profile: King Ferdinand I of the Two-Sicilies.