Pope Celestine V resigned after just five months in the job to return to his life as an ascetic hermit.
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Pope Benedict XVI's butler, Paolo Gabriele, was convicted and jailed for 18 months for leaking confidential documents.
The Trevi Fountain, one of Rome's most famous landmarks, was opened to the public by Pope Clement XIII.
Native American Kateri Tekakwitha became the first native to become a saint.
The Wars of Castro ended when Pope Innocent X and his forces destroyed the Italian city of Castro.
King Henry VIII was forbidden to remarry in a letter sent to him by Pope Clement VII.
