He is perhaps best known for having met Attila the Hun in 452AD and persuaded him to turn back from his invasion of Italy. He was also a Doctor of the Church, most remembered theologically for issuing the Tome of Leo, a document that was a major foundation to the debates of the Council of Chalcedon, the fourth ecumenical Council.

His Feast Day is celebrated on November 10.

Pope Saint Leo the Great,

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