Books by Brett Edward Whalen

Covering decades that included the last major crusades, the birth of the Inquisition, and the unexpected invasion of the Mongols, The Two Powers shows how Popes Gregory and Innocent's battles with Emperor Frederick shaped the political circumstances of the thirteenth-century papacy and its role in the public life of medieval Christendom.

Pilgrimage in the Middle Ages: A Reader is a rich collection of primary sources for the history of Christian pilgrimage in Europe and the Mediterranean world from the fourth through the sixteenth centuries.

Whalen explores the belief that Christendom would spread to every corner of the earth before the end of time. During the High Middle Ages the Western followers of Rome imagined the future conversion of Jews, Muslims, pagans, and Eastern Christians into one fold of God's people, assembled under the authority of the Roman Church.