The work offers a detailed civil history of the Kingdom of Naples, combining narrative accounts of dynastic disputes and papal interventions with analysis of legal and administrative institutions. It reconstructs contested royal successions, the arguments advanced before the papal court, and ceremonies of investiture and coronation, and reports jurists' pleadings and diplomatic maneuvers. Parallel chapters examine the organization and growth of royal tribunals, the duties and ranks of officials, relations among monarch, nobility, and cities, and reforms in governance, taxation, and urban administration. Emphasis rests on how law, ceremony, and political practice shaped state authority and public order in the medieval Neapolitan realm.