Teilo was a pupil of Dyfrig and Paul Aurelian (see March 12th), and a cousin of St David (see March 1st), whom he succeeded as Bishop of St David’s. During the plague he spent seven years away from Wales with Samson at Dol in Brittany. His main foundation was at Llandeilo Fawr. One of the sayings attributed to him is: ‘Do not do injury, if you can possibly avoid it’ – a challenging admonition.
Teach me, Lord, to do all the good that I can and not to do evil, to cherish people and not to harm them, to do Your will and not my own. Grant me Your grace, for without it I can do nothing. Amen.