aid the reunion of the Roman Catholic and Eastern Orthodox churches. Notes References Alexander of Telese, The Deeds of Roger. Houben, Hubert (translated by Graham A. Loud and Diane Milburn). Roger II of Sicily: Ruler between East and West. Cambridge University Press, 2002. Matthew, Donald. The Norman Kingdom of Sicily (Cambridge Medieval Textbooks), 1992. |- |- 1156 deaths Italo-Normans Norman warriors Robert 2 Robert 2 Year of birth unknown