Corpus of Electronic Texts Edition
The Irish Charters in the Book of Kells (Author: [unknown])

section 19

No. 4—Page 136

Nothing remains to determine the age of this document but the name of Amhalgaidh, Comharba of Patrick, who became Archbishop of Armagh in the year 1021, and died in 1050. There were many Kings of Meath of the O'Melaghlin family named Conchobar or conor, the son of Domhnall, who is mentioned in the Annals of Ulster, of Clonmacnoise and of the Four Masters, as having blinded his brother Flann in the year 1037.

The death of a Maelmuire O h-Uchtain, Comharba of Kells, is entered in the Annals of the Four Masters at tthe year 1008, but the person referred to in this document must have been a later namesake of his who flourished in or after the year 1021, when Amhalgaidh became Comharba or successor of St. Patrick. But of this second Maelmuire the Irish annalists have preserved no notice.