Not found on our Episcopal Church calendar, but venerated today (Feb 9) by our Anglican brothers and sisters in the Church in Wales is St. Teilo of Llandeilo, an early saint of Christianity in Wales. An appropriate prayer for his remembrance is this collect for a missionary from Exciting Holiness:
Everlasting God, whose servant Teilo carried the good news of your Son to the people of Llandeilo: Grant that we who commemorate his/her service may know the hope of the gospel in our hearts and manifest its light in all our ways; through Jesus Christ your Son our Lord, who is alive and reigns with you, in the unity of the Holy Spirit, one God, now and for ever. Amen.
For more about St. Teilo, click here.