The fair of Tailtiu was held by Tairdelbach ua Conchobuir.
Three principal bridges were built by Tairdelbach ua Conchobuir in this year i.e. the bridge of Áth Luain and the bridge of Áth Croca and the bridge of Dún Leoda.
An army was led by Tairdelbach into Mide and he expelled Murchad ua Mael Sechnaill into the North and took his pledges on the honour of the successor of Pátraic and the Staff of Jesus.
Domnall grandson of Lochlann, king of the north of Ireland, i.e. Ailech, rested.
Samuel, bishop of Áth Cliath, rested.
A plundering army was led by Tairdelbach ua Conchobuir into Mumu and they caused great terror to Caisel and plundered Ard Finain. The rear of the army was attacked as it was moving south and there was killed there Aed ua Eidhin, king of Uí Fhiachrach, and Muiredach ua Flaithbertaigh, king of West Connacht, and Muirgius ua Lorcáin and others.
A great encampment by Tairdelbach ua Conchobuir and Leth Cuinn at Birra from Samain to the feast of Brigit, and they divided Desmumu between the descendants of Carthach and the descendants of Briain.
Aed son of Domnall ua Ruaírc, king of East Connacht, dies.
Aed son of Donnslébhe ua Eochadha, king of Ulaid, was killed by ua Mathgamna in a battle.
Mael mórda ua Domnaill, king of Uí Cheinnselaígh, rested as a cleric.
Mael Sechnaill ua Donnacáin, king of Arad Tíre, was treacherousy killed by Clann Coscraigh.
Damliag of Ciannán was captured against Murchad ua Mael Sechnaill by the Gailenga and the house in which he was, was demolished. Some of his following were killed and he himself escaped from it.
Donnchad son of Gilla Pátraic Ruadh, king of Osraige, was killed by his own people.
The cross of Christ came into Connacht in this year.
A great army was led by Tairdelbach ua Conchobuir by sea and land and plundered Ciarraige and came as far as Corcach, and the nobles of Desmumu came into his house, including Donnchad mac Carthaigh and Cellach ua Bric and ua Cennfaeladh and ua Conchobuir Ciarraige, and he returned safe home over the plain of Cell Dalua.
A great fleet was brought by Tairdelbach to Rinn Luimnigh and he devastated and plundered Desmumu.
Tadc son of Mac Carthaigh, king of Desmumu, dies. Cormac ruled after him.
The great bell-tower of Cluaín moccu Nóis was completed by Gilla Críst ua Maíleoin and Tairdelbach ua Conchobuir.
Castles were built by the Connachta i.e. the castles of Dún Gaillmhe and Dún Leoda and Cúil Maile.
A raiding army was brought by Tairdelbach ua Conchobuir into Magh Cairbre and he plundered the Conmaicne, and Murchad ua Mael Sechnaill and the Conmaicne came up with them and the rear of the Connachta was defeated at Craeb Rois da Carn, and there fell there Sinnach Soghain ua Cellaigh and ua Duib son of Lendán. The Connachta however turned back against them and a number of them were killed including the chief of Muintir Geradáin.
Giolla Braide ua Ruairc was drowned on Loch mac nÉn in Connachta.
Mael Sechnaill son of Tadc ua Maílruanaidh, king of Magh Luirg, was killed by the men of Bréifne and by Tigernán ua Ruairc.
The hostages of Desmumu, including the son of Cormac mac Carthaigh were killed by Tairdelbach ua Conchobuir.