Kalends of Jan. on 3rd feria, 1st of the moon, A.D. 1367-70.
Great, firm, well-established peace was made by the Cenel-Eogain amongst themselves. The territory was divided between them by Niall Ua Neill and Domnall, his brother; hostage and kingship were ceded by Domnall to Niall.
Crushing defeat was inflicted by Niall O'Neill, namely, by the king of the Fifth of Ulster, on Brian Mag Mathgamna, that is, on the king of Oirgialla and many of the people of Mag Mathgamna were drowned and many slain thereby. Mac Gilli-Cua, a sage without defect, was drowned thereby.
Dubchablach, daughter of Ua Raighillaigh (namely, daughter of Philip Ua Raighillaigh), the married wife of Philip Mag Uidhir, died.
Great war arose in this year between the Clann-Muircertaigh and Muinter-Ruairc. O'Raighillaigh and Mag Uidhir and O'Ferghail and O'Concobuir rose out against the Clann Muircertaigh and forced them into Muinter-Eoluis. And Mag Raghnaill abandoned them through the excessive power of those kings and they and Mag Tigernain with them were forced to Mac William de Burgh.
A hurtful attack was made by the sons of Aedh Mac Cathmail and the royal chief of Cenel-Feradhaigh, namely, Gilla-Patraig Mac Cathmail and his good son, Cu-Uladh junior and his wife, the daughter of Maghnus Mag Mathgamna, were killed by them in treachery. Murchadh, his brother, succeeded in his place after him.
Maghnus
Cathair Ua Concobuir, one fit to be king of Ui-Failghe, fell in the rear of a foray party by the Foreigners of Meath.