Columbia subject headings:
Papacy--History--To 1309.
Urban II, Pope, approximately 1042-1099.
Harvard subject headings:
Church renewal--Catholic Church--History--To 1500.
Holy Roman Empire--Church history.
Holy Roman Empire--History--Franconian House, 1024-1125.
Papacy--History--To 1309
Urban II, Pope, approximately 1042-1099.
Princeton subject headings:
Urban II, Pope, approximately 1042-1099.