People Italy John IV of Naples peoplepill id: john-iv-of-naplesJION 3 views today 10 views this weekItalian dukeJohn IV of NaplesBiographyListsAlso ViewedListsJohn IV of Naples is in following listsBy field of workNotable Italian royalsGender:MaleBy work and/or countryNotable Italian NoblesGender:MaleFrom our partnersSponsoredJohn IV of Naples