On Saturday, Pope John XXIII and Pope John Paul II will both be named saints. In light of their canonization, take a look back at a few of the notable, unusual and surprising moments throughout papal history.
Pope Stephen I (May 254-August 257 AD) -- Pope Stephen I is said to have been sitting on his throne, celebrating Mass, when Emperor Valerian's men stormed the room and beheaded him where he sat. The blood-stained throne is alleged to have been preserved by the church until the 18th century.
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