Kalends of January sixth feria, second of the moon. AD 1042.
Ferna Mór Maedóc was burned by Donnchad son of Brian. Glenn Uisen was burned by the son of Mael na mBó and the oratory broken down and a hundred people slain and four hundred taken out of it in revenge for Ferna Mór.
Loingsech i.e. ua Flaithéin, successor of Ciarán and Crónán, rested.
Aed son of the abbot i.e. of Mael Muire and of Sétaige daughter of ua Lorcáin, died in Corcach Mór Muman.
Murchad son of Dúlang, king of Laigin, and Domnall son of Aed, king of Uí Bairchi, fell by Gilla Pátraic son of Donnchad, king of Osraige, and Mac Ráith son of Donnchad, king of Eóganacht.
Flann son of Mael Sechnaill, heir designate of Ireland, was treacherously killed.
Mael Petair ua hAilecáin, lector and master of the students of Ard Macha, was killed by the men of Fernmag.
Ailill of Mucnám, head of the Irish monks in Cologne, rested.