Kalends of January
. AD 849.
Cétadach, abbot of Cluain Moccu Nóis, and Tuathal son of Feradach, abbot of Rechru and Dairmag, and Ferchar son of Muiredach, superior of Lann Léire, died.
Aengus son of Suibne, king of Mugdorna, was killed by Gairbíth son of Mael Brígte.
Cinaed son of Conaing, king of Cianacht, rebelled against Mael Sechnaill with the support of the foreigners, and plundered the Uí Néill from the Sinann to the sea, both churches and states, and he deceitfully sacked the island of Loch Gabor, levelling it to the ground, and the oratory of Treóit, with seventy people in it, was burned by him.
Braen son of Ruaidrí, king of Uí Chremthainn, and his two brothers, Fogartach and Bruatur, were killed by their own kinsmen.