Pope Gregory VII
Pope Saint Gregory VII (c. 1020/1025 – May 25, 1085), born Hildebrand of Soana (Italian: Ildebrando di Soana), was pope from April 22, 1073, until his death. One of the great reforming popes, he is perhaps best known for the part he played in the Investiture Controversy, his dispute with Henry IV, Holy Roman Emperor affirming the primacy of the papal authority and the new canon law governing the election of the pope by the college of cardinals.
Rev. C. Arthur Lane Illustrated Notes on English Church History (London: Society for Promoting Christian Knowledge, 1901)