P ope Urban II (1088-1099) was a key figure in the process of initiating the First Crusade by calling upon the Christian world to gather together in the name of God and defend the Christian faith ...

But when Pope John II was elected in 533 A.D., he changed the ... held the papacy from 401 to 417), seven Urbans (the first Pope Urban reigned from 222 to 230) and six Leos (there were seven ...