Kalends of January
. AD 826.
Échtgus, superior of Tamlacht, fell asleep.
The dishonouring of Eogan in Ard Macha by Cumuscach son of Cathal and by Artrí son of Conchobor.
Lusca was plundered by the heathens and burned; and Cianacht was invaded as far as Uachtar Ugán; and also a plundering of the foreigners of the East.
The battle of Leth Cam won by Niall son of Aed against the Uí Chremthainn and Muiredach son of Echaid, king of Ulaid, in which fell Cumuscach and Congalach, two sons of Cathal, and many other kings of the Airgialla.
A disturbance of the Fair of Tailtiu caused by an attack on the Gailenga by Conchobor son of Donnchad, and many fell therein.
A disturbance of the Fair of Colmán caused by an attack on the Laigin Desgabair by Muiredach, and very many fell therein.
Maenach son of Crunnmael, prior of Fir Rois, dies.
Abniér, abbot of Cell Achaid, fell asleep.
An encampment of the Laigin was overwhelmed by the heathens, and Conall son of Cú Chongalt, king of the Fortuatha, and countless others fell there.
A royal conference at Biror between Feidlimid and Conchobor.