Kalends of January
. AD 841.
Muiredach son of Cernach, steward of Ard Macha, dies.
The heathens still at Duiblinn.
Fínnechta son of Bresal, abbot of Cell Dumai Glinn, and Cumsud son of Ruamlus, abbot of Domnach Sechnaillall died.
Feidlimid of Cell Mór Enir, a bishop, rested.
Mael Dúin son of Conall, king of Calatruim, was taken prisoner by the heathens.
Cluain Moccu Nóis was plundered by heathens from Linn Duachaill.
Biror and Saiger were plundered by heathens from Duiblinn.
A naval force of the Norsemen was on the Bóinn at Linn Rois. There was also a naval force of the Norsemen at Linn Sailech in Ulaid.
Mórán son of Indrechtach, abbot of Clochar Mac nDaiméni, was taken prisoner by the foreigners of Linn, and later died on their hands.
Comán, abbot of Linn Duachail, was fatally wounded and burned by heathens and Irish.
Dísert Diarmata was plundered by heathens from Cael Uisci.
Cellach son of Cathgein, abbot of Druim Mór in Uí Echach, fell asleep.
Dúngall son of Fergal, king of Osraige, dies.