Kalends.
The abbess of Cell Dara, i.e. Catrian, rested.
Aed son of Niall made a foray against the Ulaid, and he left behind dead Coinnecán son of Colmán and Flaithbertach son of Niall and a large number besides.
Ailill, abbot of Achad Bó, dies.
Kalends.
There was much ice and frost so that the chief lakes and rivers of Ireland could be crossed by people on foot and on horseback from the ninth of the kalends of December 23 Nov. to the seventh of the Ides 7th of January. A stormy year.
Mael Sechnaill son of Maelruanaid was in Caisel and he took hostages from Mumu.
Great warfare between the heathens and Mael Sechnaill supported by Norse-Irish.
The slaying of Gormán son of Lonán, heir designate of Cashel, by the heathens at Loch Cenn, A.D. 856.
The oratory of Lusca was burned by the Norsemen.
Horm, chief of the dark foreigners, was killed by Rhodri son of Merfyn, king of Wales.
Sodomna, bishop of Sláine, suffers a violent death at the hands of the Norsemen.
The death of Niall son of Gillán, having been thirty years without food or drink.
Kalends.
Ímar and Amlaíb inflicted a rout on Cathal the Fair and his Norse-Irish in the lands of Munster.
Maengal, abbot of Fobar, rested.
Matudán son of Muiredach, king of Ulaid, dies.
Three persons were burned in Tailtiu by fire from heaven.
Bran son of Scannlán, king of Gabrán, dies.
Kalends.
Mael Sechnaill son of Mael Ruanaid with the men of Ireland brought a great army, by which Mumu was burned in one day, and they inflicted a defeat on the men of Mumu at Cam Lugdach, Maelchrón son of Muiredach, one of two kings of the Déisi. being left dead there. Mael Sechnaill then took the hostages of Mumu from Comar Trí nUisce to Inis Tarbnai off the Irish coast, and from Dún Cermna to Ára Airthir.
Cellach son of Guaire, king of Laigin Desgabair, i.e. Uí Cheinnselaigh, dies.
Cerball and Ímar inflicted a defeat on the border of Ara Tíre on Cenél Fiachach with the Norse-Irish of Leth Cuinn to the number of six thousand four hundred.
Kalends.
Suairlech, abbot of Achad Bó, rested.
Faelgus, abbot of Ros Cré, rested.
A royal conference was held at Ráith Aeda meic Bric of the nobles of Ireland, including Mael Sechnaill, king of Temair, and Fethgna, successor of Patrick, and Suairlech, successor of Finnia, to make peace and amity between the men of Ireland, and
Mael Guala, king of Mumu, was killed by the Norsemen with stones.