The setting of this volume is the Iberian Peninsula during the Middle Ages, where Christianity and Islam co-existed side by side as the official religions of Muslim al-Andalus on the one hand, and the Christian kingdoms in the north of the peninsula on the other. Its purpose is to examine the meaning of the word 'Mozarab' and the history and nature of the people called by that name; it represents a synthesis of the author's many years of research and publication in this field. Richard Hitchcock first sets out to explain what being a non-Muslim meant in al-Andalus, both in the higher echelons of society and at a humbler level. The terms used by Arab chroniclers, when examined carefully, suggest a lesser preoccupation with purely religious values than hitherto appreciated. Mozarabism in León and Toledo, two notably distinct phenomena, are then considered at length, and there are two chapters exploring the issues that arose, firstly when Mozarabs were relocated in twelfth-century Aragón, and secondly, in sixteenth-century Toledo, when they were striving to retain their identity.