Guibert of Ravenna
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Guibert of Ravenna(gwĭb`ərt, gēbĕr`), d. 1100, Italian churchman, antipope (1080–1100) Clement III, b. Parma. As imperial chancellor of Italy (1057–63), he consistently supported the Holy Roman emperor's opposition to papal reform efforts, and he led the party that repudiated Pope Alexander II. Emperor Henry IVHenry IV,
1050–1106, Holy Roman emperor (1084–1105) and German king (1056–1105), son and successor of Henry III. He was the central figure in the opening stages of the long struggle between the Holy Roman Empire and the papacy.
..... Click the link for more information. made him archbishop of Ravenna (1072), and Guibert continued to intrigue against Gregory VIIGregory VII, Saint,
d. 1085, pope (1073–85), an Italian (b. near Rome) named Hildebrand (Ital. Ildebrando); successor of Alexander II. He was one of the greatest popes. Feast: May 25.
..... Click the link for more information. . In 1080, after Gregory excommunicated the emperor, Guibert summoned a council that declared the pope deposed and chose Guibert to replace him. The antipope entered Rome in 1083 in Henry's train, was enthroned in 1084, and crowned the emperor. His name is sometimes spelled Wibert.