Pope Pius VII restored the Society of Jesus.
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Otto IV was crowned Emperor of the Holy Roman Empire by Pope Innocent III.
The Trevi Fountain, one of Rome's most famous landmarks, was opened to the public by Pope Clement XIII.
A picture of Pope John Paul II was torn up by the Irish singer Sinead O'Connor on Saturday Night Live.
Pope Celestine V resigned after just five months in the job to return to his life as an ascetic hermit.
Pope Innocent I was elected.
