 Fergal led an Uí Néill army south into Leinster again in 722, but this time he was defeated and killed by the Leinstermen.This defeat was record in the "Cath Almaine", a poem about the battle of Allen, fought on 11 December 722, the feast of Saint Finnian of Clonard.Much of the work is devoted to the story of the faithful bard Donn Bó, but the introduction provides a late view of the war