Kalends of January
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AD 847.
A great snowfall on the Kalends 1st of February.
Fínnechta of Luibnech, anchorite and formerly king of Connacht, died.
Tuathchar son of Cobthach, king of Luigni, died.
Mael Sechnaill won a battle against the heathens at Forach in which seven hundred fell.
Ólchobor, king of Mumu, and Lorcán son of Cellach, with the Laigin, won a battle against the heathens at Sciath Nechtain, in which fell the jarl Tomrair, tanist of the king of Lochlann, and two hundred about him.
Tigernach inflicted a rout on the heathens in the oakwood of Dísert Do-Chonna, and twelve hundred fell there.
The Eóganacht of Caisel inflicted a rout on the heathens at Dún Maíle Tuile, in which five hundred fell.
A change of abbots at Ard Macha, i.e. Diarmait instead of Forannán.
Diarmait of Cell Chan fell asleep.