Cyril of Alexandria (c. A.D. 378-444) Nestorius opponent, Bishop of Alexandria, dominant figure at the Council of Ephesus 431, known for his Christology of hypostatic union, which emphasizes the unity of the person of Christ, and his defense of the title theotokos (Mother of God) for the Virgin Mary.
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PEOPLE (see c. A.D. 378–444)
