(c. A.D. 826–869) CyrilCyril of Alexandria (c. A.D. 378-444) Nestorius opponent, Bishop of Alexandria, dominant figure at the Council of Ephesus 431, known for his Christolo... more of Thessalonica was a Byzantine Christian theologian and missionary to the Slavic people. He was critical in developing the first Slavic literary language in order to translate the Bible into Slavic. He and his brother, Methodius(A.D. 815–885) Methodius was a Byzantine Christian theologian and missionary to the Slavic people. He was critical in developing the first Slavic li... more, found great success among the Slavic people.
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PEOPLE (see c. A.D. 826–869)