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[[image:LeoSt_Leo_the_great.jpg|right|thumb|St Leo the [[bishopPope]] of Rome.]]Our father among the saints, '''Pope Leo I''', or Saint '''Leo the Great''', was an aristocrat who was [[Pope]] of [[Church of Rome|Rome]] from 440 to 461. He is the first widely known pope, and even sometimes assigned the title "first pope." He stopped the invasion of Italy by Attila the Hun in 452 by his moral persuasion, and was a [[theologian]]. His [[feast day]] is commemorated in the East on [[February 18]], but by Western Orthodox on November 10.

At the Council of [[Chalcedon]], at which 630 bishops were present, a letter of Leo to the deceased St. [[Flavian the Confessor|Flavian]], [[Patriarch of Constantinople]] (447-449), was read. Flavian had suffered for Orthodoxy under the [[Robber Council of Ephesus]] in the year 449. In the letter of Leo, the Orthodox teaching about the two natures of Christ, divine and human, was set forth. All the bishops present at the Council were in agreement with this teaching, and so the heretics Eutyches and [[Dioscorus of Alexandria|Dioscorus]] were [[Excommunication|excommunicate]]d from the Church.

*[http://www.goarch.org/en/chapel/saints.aspsaints_view?contentid=433 Leo the Great, Pope of Rome] ([[GOARCH]])*[http://www.comeandseeicons.com/l/inp92.htm Icon of St. Leo]