Leo I, Pope and Doctor of the Church, was Pope from 440 to 461. He is named "the Great" and ranks among the most illustrious Popes.


We know little about his life but we do have his sermons that had a great influence on the Church.  Saint Leo was able to stop Attila the Hun from invading Rome. He also presided at the Council of Chalcedon. Pope Leo had a great influence on the development of the Latin liturgy.

On this feast, the breviary proposes a meditation on Sermon 4, in which Saint Leo writes: "In baptism, the sign of the cross makes kings of all who are reborn in Christ, and the anointing of the Holy Spirit consecrates them priests".