This is the first significant study of the incorporation of the church in southern Italy into the mainstream of Latin Christianity during the eleventh and twelfth centuries. Professor G. A. Loud examines the relationship between Norman rulers, south Italian churchmen and the external influence of the new 'papal monarchy'. He discusses the impact of the creation of the new kingdom of Sicily in 1130; the tensions that arose from the papal schism of that era; and the religious policy and patronage of the new monarchs. He also explores the internal structures of the Church, both secular and monastic, and the extent and process of Latinisation within the Graecophone areas of the mainland and on the island of Sicily, where at the time of the Norman conquest the majority of the population was Muslim. This is a major contribution to the political, religious and cultural history of the Central Middle Ages.