The men of Connacht set out under Ailill and Medb and Fergus and the exiled warriors of the Ulaid to Áth Briuin to assist their people. Now, in the meantime, the sons of Ailill had made hurdles of whitethorn and of blackthorn in the approach of the ford against Regamon and his host, so that they [had] not accomplished a crossing over the ford, so that Ailill came with his host: so that it is from that there is Áth Clíath Medraidi in the territory of Óc Bethra in the north of Úa Fiachrach Aidne, between the men of Connacht and the Corcmodruad. They meet there with all their forces.