The Deeds of Count Roger of Calabria and Sicily and of Duke Robert Guiscard his brother. Norwich, John Julius. The Normans in the South 1016-1130. Longmans: London, 1967. Ghisalberti, Albert (ed). Dizionario Biografico degli Italiani: II Albicante – Ammannati. Rome, 1960. Sicilian people of Norman descent Italo-Normans Norman warriors 1050s births 1092 deaths Counts of Syracuse