Guibert or Wibert of Ravenna ( 10298 September 1100) was an Italian
prelate
A prelate () is a high-ranking member of the Christian clergy who is an ordinary or who ranks in precedence with ordinaries. The word derives from the Latin , the past participle of , which means 'carry before', 'be set above or over' or 'pre ...
,
archbishop of Ravenna
This page is a list of Roman Catholic bishops and archbishops of Ravenna and, from 1985, of the Archdiocese of Ravenna-Cervia.[Pope Gregory VII
Pope Gregory VII ( la, Gregorius VII; 1015 – 25 May 1085), born Hildebrand of Sovana ( it, Ildebrando di Soana), 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 ...]
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