Cyril, St., surnamed the Philosopher, along with his brother Methodius, the “Apostle of the Slavs,” born in Thessalonica; invented the Slavonic alphabet, and, with his brother's help, translated the Bible into the language of the Slavs; d. 868. Festival, March 9.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Cyre`ne * Cyril of Alexandria, St.