Kalends of Jan. on 5th feria, 4th of the moon, A.D. 1313-16.
A large host was mustered by Feidhlimidh Ua Concobair and by Mac Feorais Birmingham and by the Foreigners of the West of Connacht. They came to the Causeway of Moin-Coinnedha. Ruaidhri Ua Concobuir went against them and they engaged with each other. Ruaidhri Ua Concobuir, king of Connacht, was killed there along with Diarmait Mac Diarmata the Foreigner, king of Magh-Luirg and Cormac Mac Ceithernaigh, king of Ciaraidhe and noble gallowglasses and many other persons. The kingship of the Fifth was assumed by Feidhlimidh again. And a large host was led by him to the assault of Ath-lethan and the place was burned by him. And Slevin de Exeter, lord of the town and de Cogan, the noblest baron that was in Ireland and many other Foreigners were killed by them. And many chattels were got by them. Their fame and their renown went throughout Ireland, so that many submitted to them.
A great hosting was undertaken by Feidhlimidh, together with the nobles of the Fifth of Connacht and with Donnchadh O'Briain, king of Munster and O'Mael-Sheclainn, king of Meath and Ualgharc O'Ruairc, king of Breifni (Ualgharc O'Ruairc took the kingship that year) and O'Ferghail, king of Muinter-hAnghaile and Tadhg O'Cellaigh, king of Ui-Maine and Maghnus, son of Domnall Ua Concobuir, tanist of Connacht and Art O'hEaghra, king of Luighni and Brian O'Dubhda, king of Ui-Fiachrach. They went, all those, to Ath-na-righ. The Foreigners of the West of Connacht all assembled against them: to wit, William de Burgh and the Baron Mac Feorais Birmingham, lord of Ath-na-righ and all the
p.429Foreigners of the greater part of the Half of Conn. Battle was engaged in by them and defeat inflicted on the Gaidhil there. Feidhlimidh O'Concobuir (son of Aedh, son of Eogan), king of Connacht, was slain there: the one person on whom the attention of the Men of all Ireland was most directed and who was best in generosity and prowess. Tadhg Ua Cellaigh, king of Ui-Maine, was slain there and eight and twenty of the Clann-Cellaigh that had right to kingship of Ui-Maine were slain there. Art O'hEghra, king of Luighni was slain there. But for one thing, there was not slain in this time in Ireland the amount that was slain there of sons of kings and of chiefs and of many other persons in addition. Ruaidhri, son of Donnchadh, son of Eogan Ua Concobuir, was then made king by the Connachtmen.
A hosting was made after that by William de Burgh into Sil-Muiredhaigh. O'Concobuir and the Connachtmen, with the exception of Mac Diarmata, made peace. Mac William de Burgh came into Magh-Luirg. Great preys were brought by them from Ath-in-chip and from Uachtair-tire and the whole country was burned and pillaged by them. They went from out the country afterwards. The same Ruaidhri was deposed by Mac Diarmata after that.
Derborgaill, daughter of Maghnus Ua Concobuir, died.