Saints Cyril and Methodius were the principal Christian missionaries among the Slavic peoples of the Great Moravia and Pannonia. They introduced Orthodox Christianity and writing to the hitherto illiterate pagan Slav migrants into parts of Macedonia and elsewhere in the Balkans.

Through their work they influenced the cultural development of all Slavs, for which they received the title “Apostles to the Slavs”. They are credited with devising the Glagolitic alphabet, the first alphabet used to transcribe Old Church Slavonic. Both brothers are venerated in the Orthodox Church as saints with the title of “equal-to-apostles.”

For a full list of today’s saints, visit the Orthodox Church in America.