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When their father, the High King, learnt how that Eochaid had brought about his daughters’ dishonour and death, he rallied auxiliaries to his aid, and marched into Leinster, ravaging it as he went. The province and its king were saved only by Eochald’s humiliated submission, and his binding the province to pay to the High King at Tara, every alternate year for an Indefinite period, the tremendous tribute which came to be known as the Boru or cow-tribute — five thousand cows, five thousand hogs, five thousand cloaks, five thousand vessels of brass and bronze, and five thousand ounces of silver. This crushing tribute was henceforth laid upon Leinster, by the High King of Tara from the time of Tuathal forward till the reign of Fionnachta, a period of five hundred years — but in most cases having to be lifted with steel hands. It caused more bloody history than did almost any other festering sore with which Ireland was ever afflicted. During these five centuries hardly a High King sat upon the throne of Tara, who did not have to carry the bloody sword into Leinster again and again, forcibly to hack his pound of flesh from off that province’s palpitating body. And only sometimes was the fight fought between Meath and Leinster alone. Often, through alliances, mutual sympathies, antagonisms, hopes, or dangers, half of Ireland, and sometimes all of Ireland was embroiled. So, together with much that was good Tuathal left to his country a bloody legacy.[15]
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