Today the Roman Martyrology commemorates St. Teilo, Bishop of Llandaff, Wales (d. 6th century), is celebrated as a feast in Wales. Teilo was the son of Ensic and Guenhaff. He was the spiritual student of Saint Dyfrig of Wales and friend of Saint David of Wales and Saint Samson of York. He founded Llandaff monastery in Dyfed, Wales.