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In page Roger II of Sicily:

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When William II of Apulia died childless in July 1127, Roger claimed all Hauteville family possessions in the peninsula as well as the overlordship of the Principality of Capua, which had been nominally given to Apulia almost thirty years earlier. However, the union of Sicily and Apulia was resisted by Pope Honorius II and by the subjects of the duchy itself.