Kalends of January
[...]
. AD 811.
Flann son of Cellach, abbot of Finnglas, a scribe, anchorite and bishop, died suddenly.
Item: the bishop and anchorite Echaid, superior of Tamlacht, rested.
Coscrach son of Niallgus, king of Garbros, and Cernach son of Flaithnia, king of Mugdorn of Brega, died.
Nuadu of Loch Uama, bishop, anchorite and abbot of Ard Macha, fell asleep.
Flann son of Congalach, king of Ciannacht, dies.
Aengus son of Dúnlang, king of Cenél Artgail, and Flaithbertach son of Cairpre, superior of Cell Mór Enir, die.
Aed Rón, king of Corcu Baiscinn, dies.
A slaughter of the heathens by the men of Umall. A slaughter of the Conmaicne by the heathens.
A slaughter of the Calraige of Lurg by the Uí Briúin.
A slaughter of the Corcu Róidi of Mide by the Uí Moccu Uais.
A slaughter of the heathens in Mumu, viz. by Cobthach son of Mael Dúin, king of Loch Léin.
The south was invaded by Muirgius son of Tomaltach, king of Connacht.
Daire's law promulgated in Connacht.