County of Sicily was created by Robert Guiscard in 1071 for his younger brother Roger Bosso. Guiscard himself had received the title Duke of Sicily ("dux Siciliae") in 1059 from Pope Nicholas II as encouragement to conquer it from the Muslims. In 1061 the first permanent Norman conquest (Messina) was made and in 1071, after the fall of Palermo, the capital of the emirate and future capital of the county, Guiscard invested Roger with the title of count and gave him full jurisdiction in the island save for half the city of Palermo, Messina, and the Val Demone, which he retained for himself.
Emirate of Sicily were a common component of these "Christian" armies from this era. The House of Hohenstaufen and their successors (Capetian House of Anjou and Aragonese House of Barcelona) gradually "Latinized" Sicily over the course of two centuries, and this social process laid the groundwork for the introduction of Latin (as opposed to Byzantine) Catholicism. The process of Latinization was fostered largely by the Roman Church and its liturgy. The annihilation of Islam in Sicily was completed by the late 1240s, when the final deportations to Lucera took place. Emirate of Sicily The Emirate of Sicily () was an emirate on the