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Eutyches

(Encyclopedia)Eutyches yo͞oˈtĭkēs [key], c.378–c.452, archimandrite in Constantinople, sponsor of Eutychianism, the first phase of Monophysitism. He was the leader in Constantinople of the most violent oppone...

Chalcedon, Council of

(Encyclopedia)Chalcedon, Council of, fourth ecumenical council, convened in 451 by Pulcheria and Marcian, empress and emperor of the East, to settle the scandal of the Robber Synod and to discuss Eutychianism (see ...

Eudocia

(Encyclopedia)Eudocia yo͞odōˈshə [key], d. 460, Roman empress of the East; daughter of an Athenian Sophist. She was selected by Pulcheria as the wife of Theodosius II, whom she married (421) after being baptize...

Theodoret

(Encyclopedia)Theodoret thēŏdˈərĕt [key], c.393–c.458, Syrian churchman and theologian. He was a monk of Apamaea and a lifelong friend of Nestorius. In 423 he went unwillingly to be bishop of Cyrus, Syria, w...

Cyril, Saint (St. Cyril of Alexandria)

(Encyclopedia)Cyril, Saint (Saint Cyril of Alexandria) sĭrˈəl [key], d. a.d. 444, patriarch of Alexandria (412–44), Doctor of the Church, known for his animosity toward heretics and heathens. He drove the Jews...

Ephesus, Council of

(Encyclopedia)Ephesus, Council of, 431, 3d ecumenical council, convened by Theodosius II, emperor of the East, and Valentinian III, emperor of the West, to deal with the controversy over Nestorianism. Adherents of ...

Theodosius II

(Encyclopedia)Theodosius II, 401–50, Roman emperor of the East (408–50), son and successor of Arcadius. He preferred the study of theology and astronomy to public affairs, which he left to the guidance of his s...

Nestorianism

(Encyclopedia)Nestorianism, Christian heresy that held Jesus to be two distinct persons, closely and inseparably united. In 428, Emperor Theodosius II named an abbot of Antioch, Nestorius (d. 451?), as patriarch of...

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