Ceallach he was roused to fury and he followed Ceallach to Tara taking with him his foster child, scil.:--Corc Duibhne, the son of Cairbre, son of Conaire, son of Mogha Lamha whom Cormac held as a hostage from the Munstermen, and whom he had given for safe custody to Oengus. When Oengus reached Tara he beheld Ceallach sitting behind Cormac. He thrust his spear at Ceallach and pierced him through from front to back. However as he was withdrawing the spear the handle struck Cormac's eye and knocked it out and then, striking the steward, killed him. He himself (Oengus) with his foster child escaped safely. After a time Cormac, grieving for the loss of his son, his eye and his steward at the hands of Oengus of the poisonous javelin and of his kinsmen, ordered their expulsion from their tribal territory, i.e. from the Decies of Tara, and not alone from these, but from whole northern half of Ireland. However, seven battles were fought in which tremendous loss was inflicted on Cormac and his followers before Oengus and his people, i.e. the three sons of Fiacha Suighde, namely, Ross and Oengus and Eoghan, as we have already said, were eventually defeated, and obliged to fly the country and to suffer exile. Consequent on their banishment as above by the king of Ireland they sought hospitality from the king of Munster, Oilill Olum, because Sadhbh, daughter of Conn Ceadcathach was his wife. They got land from him, scil.: the Decies of Munster, and it is to that race, i.e. the race of Eoghan Mac Fiacha Suighde that the kings and country of the Decies belong ever since.