The Bulgarian Orthodox Church commemorates today Saint Euthimius, the Patriarch of Tarnovo. He was born circa 1327 to a noble family in Bulgaria’s medieval capital Veliko Tarnovo and as a very young man became a monk at the Monastery of Kelifarevo, a foremost scholarly center for Bulgarians and other Slavic nations. Euthimius worked on the Bulgarian spelling based on the linguistic norm established by the first teachers, the Holy Brothers Cyril and Methodius. He carried out a linguistic reform creating the Bulgarian literary language. Euthimius was elected patriarch in 1375. He led courageously the resistance of Tarnovo people against the Ottoman attempts to conquer the capital city. After the fall of Veliko Tarnovo under Ottoman yoke in 1393 Patriarch Euthimius was exiled and died circa 1402. He was canonized as saint by the Bulgarian Orthodox Church in 15 c. and is commemorated on 20 January by both the Bulgarian and other East Orthodox churches.