The House of Sanseverino (or San Severino) is an Italian noble family that was very prominent in the Kingdom of Naples. The family owned 300 fiefs, 40 counties, nine marquessates, twelve duchies and ten principalities, primarily located in Calabria, Campania, Basilicata, and Apulia.[1] From this family emerged cardinals, viceroys, marshals and condottieri.[2]