Jews settled in medieval Spain at least by the third century, and under the Christian Visigoths (sixth to eighth centuries) suffered increasing hostility and persecution, from which they were saved by the Muslim invasion (711). This book details the relations between Jews and the Visigoths, and then with the Muslims both in Muslim Spain proper (al-Andalus) and in later Christian Spain to the fifteenth century. It examines both the positive and negative aspects of those relations, drawing on a variety of sources many of which are here utilized for the first time. Political, socio-economic, scientific, cultural, literary and even sexual aspects of the history of the interaction between Jews and Visigoths, and Jews and Muslims, provide hopefully a new insight into a period of great importance in history.