Kalends of Jan. on 7th feria, 23rd of the moon, A.D. 1239.
The battle of Carn-Siadhail was fought by Domnall Mag Lachlainn, wherein was killed Domnall O'Neill of Tamnach, and Mag Mathgamna and the nobility of all Cenel-Moen and a multitude more were slain. And he (namely, Domnall Mac Lachlainn) had been dethroned the year before that and he assumed the same kingship again, on the morrow of that great defeat he inflicted.