Guibert or Wibert of Ravenna (8 September 1100) was an Italian
prelate
A prelate () is a high-ranking member of the Minister (Christianity), Christian clergy who is an Ordinary (church officer), ordinary or who ranks in precedence with ordinaries. The word derives from the Latin , the past participle of , which me ...
,
archbishop of Ravenna This page is a list of Catholic bishops and archbishops of Ravenna and, from 1947 of the Archdiocese of Ravenna and Cervia, which in 1985 became styled the Archdiocese of Ravenna-Cervia.[Pope Gregory VII
Pope Gregory VII (; 1015 – 25 May 1085), born Hildebrand of Sovana (), was head of the Catholic Church and ruler of the Papal States from 22 April 1073 to his death in 1085. He is venerated as a saint in the Catholic Church.
One of the great ...]
and took the name Clement III. Gregory was the leader of the movement in the church which opposed the traditional claim of European monarchs to control