 The two monks later canonized as Saints Cyril and Methodius, brothers from Thessaloniki, were sent to Great Moravia in 862 by the Byzantine emperor at the request of Prince Rastislav, who wanted to weaken the dependence of his country on East Frankish priests.The Glagolitic alphabet, however it originated, was used between 863 and 885 for government and religious documents and books and at the Great Moravian Academy ("Veľkomoravské učilište") founded by the missionaries, where their followers were educated.The Kiev Missal, found in the 19th century in Jerusalem, was dated to the 10th century.