Title: The Early Papacy: To the Synod of Chalcedon in 451, Author: Adrian Fortescue
Title: The Pope Who Quit: A True Medieval Tale of Mystery, Death, and Salvation, Author: Jon M. Sweeney
Title: Innocent III: Vicar of Christ or Lord of the World? / Edition 2, Author: James M. Powell
Title: Reform and the papacy in the eleventh century: Spirituality and social change / Edition 1, Author: Kathleen G. Cushing
Title: The Papacy and Crusading in Europe, 1198-1245, Author: Rebecca Rist
Title: The Lives of the Ninth-Century Popes: (Liber Pontificalis), Author: Liverpool University Press
Title: Pope Alexander III And the Council of Tours (1163): A Study of Ecclesiastical Politics and Institutions in the Twelfth Century, Author: Robert Somerville
Title: Papal Reform and Canon Law in the 11th and 12th Centuries, Author: Uta-Renata Blumenthal
Title: The Popes and the Papacy in the Early Middle Ages (Routledge Revivals): 476-752, Author: Jeffrey Richards
Title: Papal Ceremonial at Rome in the Twelfth Century, Author: Susan Twyman
Title: The English Church and the Papacy: From the Conquest to the Reign of John / Edition 2, Author: Zachary Nugent Brooke
Title: The Spanish Church and the Papacy in the Thirteenth Century, Author: Peter Linehan
Title: The Papacy, 1073-1198: Continuity and Innovation / Edition 1, Author: I. S. Robinson