The Kingdom of the Two Sicilies was a kingdom in southern Italy from 1816 until 1861. It was created by Ferdinand I of the Two Sicilies, after the Congress of Vienna of 1814, by uniting the Kingdom of Sicily and the Kingdom of Naples, which had been ruled by Joseph Bonaparte who conferred the title "Prince of Naples" to be hereditary on his children and grandchildren, during the reign of Napoleon. The ruling dynasty was a cadet branch of the House of Bourbon.