Muiredach was of the Cenél Lóegairi, and connected to the royal family of King
Lóegaire mac Néill. He is described as an old man of Patrick's family, and was placed at the head of the Church of Killala by
St. Patrick, as early as 442 or 443. The connection with Patrick doesn't reconcile with Muiredach's being active in the late 6th century, and probably reflects Armagh's interests in Killala.
St Muredach's Cathedral, Ballina is the cathedral church of the Roman Catholic Diocese of Killala. ==References==