 He can be considered chiefly responsible for the rise of the Hautevilles in the Mezzogiorno.He opposed Pandulf of Capua, unlike his father, and he united his principality with that one for the first time since Pandulf Ironhead.In 1038, he sought the arbitration of both emperors over matters concerning Pandulf, but only the Holy Roman Emperor, Conrad II, responded, and Salerno became fully Western in allegiance.