Italo-Norman adjective 2noun 1forms 1 adjective2 •(historical) Of or pertaining to the period of Norman rule of southern Italy, 1071–1194.Often he is our only source, particularly for Roger's Sicilian campaigns and for Italo-Norman history following the death of Robert Guiscard. — 2001 •(historical) Of or pertaining to Normans who settled in Italy during or after the Norman conquest of southern Italy, or their descendants.Representing the Italo-Norman perspective we have the anonymous Gesta Francorum and the Historia belli sacri, besides Ralph of Caen's Gesta Tancredi. — 2008 noun1 •(historical) A Norman who settled in Italy during or after the Norman conquest of southern Italy, or a descendant of one. formsItalo-Normans