Sailtír Battles
Archived: 4 November 2026
Abstract
In 637 CE, Ireland’s most consequential recorded development was a pair of connected battles: Mag Rath and Sailtír. Medieval annals place them on the same day and present them as a decisive victory for Domnall mac Áedo, the leading Uí Néill ruler of the north-west, over the challenge mounted by Congal Cáech, overking of Ulaid. The year also brought the death of Failbe Flann, king of Mumu, and the recorded repose of the churchman Mo-Chutu of Raithen. These notices are brief, but together they reveal a kingdom of rival dynasties, military followings and powerful churches, tied to western Scotland as