Roger's first marriage was in 1117 to Elvira, a daughter of King Alfonso VI of Castile. When she died, rumors flew that Roger had died as well, as his grief had made him a recluse. They had six children:
Roger (b. 1118 d. 12 May 1148), heir, Duke of Apulia (from 1135), possibly also Count of Lecce;
Tancred (b. 1119 d. 1138), Prince of Bari (from 1135).
Alfonso (b. 1120/1121 d. 10 October 1144), Prince of Capua (from 1135) and Duke of Naples;
A daughter (d. young in 1135);
William (b. 1131 d. 7 May 1166), his successor, Duke of Apulia (from 1148)
Henry (b. 1135 d. young).
Roger's second marriage was in 1149 to Sibylla, daughter of Hugh II, Duke of Burgundy. They had two children:
Henry (b. 29 August 1149 d. young);
Stillborn child (16 September 1150).
Roger's third marriage was in 1151 to Beatrice of Rethel, a grandniece of King Baldwin II of Jerusalem. They had one daughter:
Constance (b. posthumously, 2 November 1154 d. 28 November 1198), who married the Emperor Henry VI and was later Queen of Sicily.
Roger also had five known illegitimate children:
By a daughter of Hugues I, Count of Molise:
Simon, who became Prince of Taranto in 1144.
With unknown mistresses:
A daughter, wife of Rodrigo Garcs (later Henry, Count of Montescaglioso)
A daughter, wife of the neapolitan nobleman Adam;
Clenenza, married Hugues II, Count of Molise;
Adelisa (d. aft. 1184/87) married firstly Joscelin, Count of Loreto, and secondly Robert of Bassonville, Count of Loritello;
Marina, married the great admiral Margaritus of Brindisi.
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Houben, Hubert (translated by Graham A. Loud and Diane Milburn). Roger II of Sicily: Ruler between East and West. Cambridge University Press, 2002.
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