SS. Cyril and Methodius National Library SS. Cyril and Methodius National Library The SS. Cyril and Methodius National Library (Национална библиотека „Свети Свети Кирил и Методий“) is the national library of Bulgaria, situated in the capital city of Sofia. Founded on 4 April 1878, the library received the status of Bulgarian National Library three years later and the Bulgarian National Revival Archive was merged into it in 1924. It is named after "SS. Cyril and Methodius"; Saints Cyril and Methodius. They are the creators of the Glagolitic alphabet. The Cyrillic alphabet is named after Cyril. The present building of the library is among the landmarks of
Glagolitic script Glagolitic script The Glagolitic script (, "Glagolitsa") is the oldest known Slavic alphabet. It is generally agreed to have been created in the 9th century by Saint Cyril, a Byzantine monk from Thessaloniki. He and his brother, Saint Methodius, were sent by the Byzantine Emperor Michael III in 863 to Great Moravia to spread Christianity among the West Slavs in the area. The brothers decided to translate liturgical books into the Old Slavic language that was understandable to the general population, but as the words of that language could not be easily written by using either the Greek or Latin