While most people think of St. Valentine on the 14th, on the Episcopal Church's calendar we remember Sts. Cyril and Methodius, remarkable brothers who were priests, missionaries, and the creators of the Slavic language. It's a good story, and well renedered at this link.
Almighty and everlasting God, by the power of the Holy Spirit you moved your servant Cyril and his brother Methodius to bring the light of the Gospel to a hostile and divided people: Overcome all bitterness and strife among us by the love of Christ, and make us one united family under the banner of the Prince of Peace; who lives and reigns with you and the Holy Spirit, one God, now and for ever. Amen.
February 15: Thomas Bray
O God of compassion, you opened the eyes of your servant Thomas Bray to see the needs of the Church in the New World, and led him to found societies to meet those needs: Make the Church in this land diligent at all times to propagate the Gospel among those who have not received it, and to promote the spread of Christian knowledge; through Jesus Christ our Lord, who lives and reigns with you and the Holy Spirit, one God, for ever and ever. Amen.