Kalends of January fifth feria, fifth of the moon. AD 1080.
Donn ua Lethlobuir, king of Fernmag, was killed by the Uí Laithein in Sliab Fuait.
Ua Ciarda, king of Cairbre, died.
Cellach, successor of Patrick, was born.
Derbhforgaill, daughter of Brian's son, wife of Diarmait son of Mael na mBó, died in Imlech.
Eochaid ua Meirligh, king of Fernmag, was treacherously killed.
Donnsléibe ua hEochada went into Mumu with the nobles of the Ulaid to seek hire.
The defeat of Áth Ergail beside Clochar was inflicted on the Fir Manach by Domnall ua Lochlainn and the men of Magh Itha, and therein fell the persecutors of Ard Macha, i.e. Sitriuc ua Coemán and the son of Niall ua Serraigh and others.
- (Áth Ergail
Where warriors inflicted severance:
A company that will be unloved
On account of the clash at Áth Ergail.)