Kalends of January
[...]
. AD 985 alias 986.
A great disturbance in Ard Macha on the Sunday 25 July before Lammas between the Uí Echach and the Uí Nialláin, and in it the son of Trénar son of Celecán and others fell.
The Danes arrived on the coast of Dál Riata, that is, with three ships, and seven score of them were executed and others sold.
Í of Colum Cille was plundered by the Danes on Christmas Night, and they killed the abbot and fifteen of the elders of the monastery.