St. Cyril and St. Methodius (9th Century AD) were brothers from Greece who went to preach about Jesus to the Slavic people in Eastern Europe. They have great influence on the culture and religion of the Slavs who include Croats, Czechs, Poles, Slovaks, Russians, Ukrainians and many other peoples. They are called the Apostles of the Slavs. To teach the Gospel, they invented an alphabet known as the Cyrillic Alphabet, which is still used in the Eastern Churches today. St. Cyril became a monk and St. Methodius became a Bishop later. Their feast day is on 14 February.