Kalends of January first feria, twenty-ninth of the moon. AD 1055.
Domnall Ruad ua Briain was killed by ua hEidinn.
Mael Martain son of Aisíd successor of Comgall, Colum ua Cathail, superior of Ros Ailithir, Odar ua Muiredaig, superior of Lusca. Gilla Pátraic, king of Osraige, and Fiachra ua Corcráin,—all fell asleep in the Lord.
A defeat was inflicted by Toirdelbach ua Briain on Murchad ua Briain in which four hundred fell including fifteen chiefs.
The battle of Martarthech was won by Dub dá Leithe, successor of Patrick, against the son of Loingsech ua Maíl Shechnaill, i.e. the successor of Finnén and Colum Cille, and many fell there.