Of this monarch, known as Murkertagh MacNeill (Niall), and sometimes by reference to his mother as Murkertagh Mac Erca, the story is told, illustrating an ancient Celtic custom, that in making a league with a tribe in Meath he emphasized the inviolability of the treaty by having it written with the blood of both clans mixed in one vessel.
Several churches seem to have been founded in the kingdom of Meath by the saint, but they cannot now be identified.
The first part of this memoir, which was probably compiled about 670, deals with the saint's work in Meath, the second with his activity in Connaught.
The Richmond lunatic asylum, erected near the House of Industry, and placed under the care of officers appointed by government, receives patients from a district consisting of the counties of Dublin, Louth, Meath and Wicklow, each of these contributing towards its expenses in proportion to the number of patients sent in.
It was thus as a commanding officer that he learnt 1 At 24 Upper Merrion Street, Dublin, or at Dungan Castle, Meath, on the 29th of April or on 1st May; but both place and date are uncertain.