Short answers, pulled from the story.
Ferdinand I of the Two Sicilies was born in Naples on the 12th of January 1751. He became king at age eight after his father Charles III abdicated his Neapolitan and Sicilian titles on the 6th of October 1759.
A regency council presided over by the Tuscan Bernardo Tanucci governed during the minority of Ferdinand I of the Two Sicilies. Tanucci neglected the young king's education and encouraged him to pursue pleasure, idleness, and outdoor sports while ministers ruled.
Ferdinand I of the Two Sicilies fled aboard Nelson's ship to Palermo on the 23rd of December 1798 when French forces approached Naples. His six-year-old younger son Prince Alberto died of exhaustion during the stormy voyage and died in the arms of Emma, Lady Hamilton.
King Ferdinand returned to the throne after Cardinal Ruffo reached Naples in May 1799 with support of British artillery, the Church, and pro-Bourbon aristocracy. The restored monarchy executed several hundred French collaborators following the collapse of the republic after months of fighting.
Ferdinand I of the Two Sicilies proclaimed the union of two states into the Kingdom of Two Sicilies on the 12th of December 1816. He reigned as an absolute monarch within this domain for four years while subservient to Austria.