Born at Naples, Alfonso was the eldest child of Ferdinand I of Naples and his first wife, Isabella of Clermont, the daughter of Tristan, Count of Copertino and Caterina Del Balzo Orsini.
Alfonso was born at Naples. Alfonso was the eldest child of Ferdinand I of Naples and his first wife. Alfonso was Isabella of Clermont. Alfonso was the daughter of Tristan. Alfonso was Count of Copertino. Alfonso was Caterina Del Balzo Orsini.