Defender of the title “Mother of God”

He is described as the “guardian of exactness,” that is, the guardian of the true faith, and the “seal of the Fathers.” This is Cyril, probably born in Alexandria around 370. He spent several years in a monastery and later, in 403, accompanied his uncle Theophilus, Bishop of Alexandria, to Constantinople to take part in the Synod known as the Synod of the Oak, during which Patriarch John Chrysostom was condemned and deposed.