Roger III of Sicily
Roger III (Template:Langx, Template:Langx; 1175 – 24 December 1193), of the House of Hauteville, was the eldest son and heir of King Tancred of Sicily and Queen Sibylla. He was made Duke of Apulia (as Roger V),<ref>The numeral V is found in Jean Rousset de Missy, Mémoires sur le rang et la préséance entre les souverains et entre leurs ministres réprésentans suivant leurs différens caractères (Amsterdam, 1746), p. 84.</ref> probably in 1189, shortly after his father's accession. In the summer of 1192 he was crowned co-king with his father.<ref>Francesco Panarelli, "Guglielmo III d'Altavilla, re di Sicilia" Dizionario Biografico degli Italiani, vol. 60 (Istituto dell'Enciclopedia italiana: 2003).</ref> Follari were minted at Messina bearing both Tancred's and Roger's names as kings.<ref>Philip Grierson, Mark A. S. Blackburn and Lucia Travaini (eds.), Medieval European Coinage, vol. 14: Italy (III) (South Italy, Sicily, Sardinia) ( Cambridge University Press, 1998), 79.</ref>
In 1193, Tancred arranged for Roger to marry Irene Angelina, daughter of the Byzantine emperor Isaac II Angelos.<ref name=Houben>Hubert Houben, Roger II of Sicily: A Ruler Between East and West (Cambridge University Press, 2002), 174.</ref> Roger died on 24 December 1193, however, upsetting his father's plans. Tancred quickly had Roger's younger brother, William III, crowned as co-king, but Tancred himself died on 20 February 1194.<ref name=Houben/> On 20 November 1194, Holy Roman Emperor Henry VI entered Palermo and William was deposed on 25 December. In 1197 Roger's widow, Irene, married Henry VI's brother, Duke Philip of Swabia.