""A History of the Papacy from the Great Schism to the Sack of Rome V6"" is a comprehensive account of the papacy during a tumultuous period of its history, written by Mandell Creighton. The book covers the period from the Great Schism in 1378 to the Sack of Rome in 1527, during which time the papacy faced numerous challenges and controversies, including the rise of rival antipopes, the Council of Constance, the Renaissance papacy, and the Protestant...