The Church commemorates the life of St. Cyril, Archbishop of Alexandria, who was born in Alexandria in AD 370 to affluent parents and lived during the reign of Theodosius the Younger.
Saint Cyril, the nephew of Archbishop Theophilos of Alexandria, received a thorough theological education and eventually succeeded his uncle as the patriarch of the Church of Alexandria.
During the Third Ecumenical Council held in Ephesus in AD 431, Cyril presided over the council and strongly opposed Nestorius’ heterodox teachings regarding the Virgin Mary. The council also reaffirmed the autocephaly of the Apostolic Church of Cyprus (Canon 8).
Known for his spiritual accomplishments, virtuous life, and significant theological contributions, Cyril was a prominent figure in the church. He passed away on June 9 AD 444 after serving on the patriarchal throne for about 32 years. Saint Anastasios of Sinai referred to him as the “seal of the Fathers.”
St. Cyril is also honored on January 18 alongside his predecessor, Saint Athanasios of Alexandria, for their immense theological impact and recognition as Fathers and Teachers of the Church.
Source: Church of Cyprus