Kalends of January
. AD 542.
The battle of Tortu i.e. won by the Laigin, in which Mac Erca son of Ailill Molt fell.
The battle of Slicech, in which Eógan Bél, king of Connacht, fell. Forgus and Domnall, two sons of Mac Erca, were victors, and Ainmire son of Sétna and Ninnid son of Sétna.