John Howe is professor of history at Texas Tech University. He is the author of Church Reform and Social Change in Eleventh-Century Central Italy: Dominic of Sora and His Patrons and was a contributor to Varieties of Religious Conversion in the Middle Ages (UPF, 1997). Michael Wolfe is professor of history and head of the Division of Arts and Humanities at Pennsylvania State University, Altoona College. He is the author of The Conversion of Henri IV: Politics, Power, and Religious Belief in Early Modern France and the editor or coeditor of three earlier books.