St. Muredach of Killala - Celtic and Old English Saints
celticsaints.org/2013/0813a.html
13 Aug 2013 - St. Murtagh of Killala, Bishop (Muredach) ... The foundation of the diocese of Killala dates from the time of St. Patrick, who placed his disciple St. Muredach over the church called in Irish Cell Alaid. ... His feast-day is 12 August.
St. Murtagh - Saints & Angels - Catholic Online
www.catholic.org/saints/saint.php?saint_id=5183
Feastday: August 12 ... Bishop of Killala, Ireland, appointed by St. Patrick. Also called Muredach, he was a member of the royal family of King Laoghaire. Murtagh ...