5 surviving letters between Pope Leo the Great and Pulcheria Augusta, spanning c. 444–453.
How much protection the Lord has extended to His Church through your clemency, we have often tested by many signs. And whatever stand the strenuousness of the priesthood has made in our times against the assailers of the Catholic Truth, has redounded chiefly to your glory: seeing that, as you have learned from the teaching of the Holy Spirit, yo...
Leo, the bishop, and the holy Synod which is assembled in the City of Rome to Pulcheria Augusta. I. He sends a copy of the former letter which failed to reach her.
Leo, bishop of the city of Rome to Pulcheria Augusta. I. He rejoices at Pulcheria's zeal both against Nestorius and Eutyches.
Your clemency's religious care which you unceasingly bestow on the Catholic Faith, I recognize in everything, and give God thanks at seeing you take such interest in the universal Church, that I can confidently suggest what I think agreeable to justice and kindness, and so what thus far your pious zeal through the mercy of Christ has irreproacha...
(To Pulcheria Augusta about the self-seeking of Anatolius.) I. He congratulates the Empress on the triumph of the Faith, but regrets the introduction of a new controversy into the Church. Leo the bishop to Pulcheria Augusta.