John Paul II became the first pope to visit the Republic of Ireland.
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Pope Paschal I crowned Lothair I as the Emperor of Italy.
Pope Fabian succeeded Anterus and became the twentieth pope of Rome.
Otto IV was crowned Emperor of the Holy Roman Empire by Pope Innocent III.
Pope Anastasius I became the Bishop of Rome, reigning until his death.
Pope Gregory XIII introduced the concept of the Gregorian Calendar to Europe.
