Saint Cyril of Alexandria

Cyril of Alexandria, Saint (378?–444), Christian theologist and bishop, known primarily for his campaign against Nestorius, the bishop of Constantinople, who denied that the Virgin Mary was the mother of God. When Cyril succeeded his uncle, Archbishop Theophilus, he attacked Christian heretics, pagans, and Jews. He was instrumental in expelling Jews from Alexandria. In 1882 the Roman Catholic church declared Cyril a doctor of the church, a special title granted to saints whose theological writings have particular authority. His feast day is Feb. 9.

See also: Christianity.