Though the annexation of Tara and Bregia was a fully accomplished fact long before St. Patrick's time, and though in his time the monarchy of Connacht origin was securely seated in Tara, the annals, whose details of history begin with St. Patrick, show that the claim to their northern territories was not yet relinquished by the Leinstermen. Time after time they invaded the lost land, and battle after battle was fought by them on its borders and even far within its borders. This continued struggle to recover possession is perhaps most clearly seen in a list of the battles from the year 432 onward--before that year we have no details. A.D. 452. A great slaughter of the Leinstermen. A.D. 453. The Leinstermen defeated in battle by Loeguire son of Niall [_i.e._ by the King of Tara]. A.D. 458. The battle of Áth Dara. Loeguire, king of Tara, is defeated by the Leinstermen and taken prisoner. A.D. 464. Leinstermen win the battle of Ard Corann. A.D. 473. Ailill Molt defeats the Leinstermen at Brí Éile. Ailill was king of Tara at this time. Brí Éile was in the kingdom of Meath. A.D. 474. The Leinstermen defeat Ailill Molt at Dumha Aichir. A.D. 486. Battle of Granard. Finchath, a Leinster king, was defeated and slain. The sept of Cairbre, son of Niall of the Nine Hostages, was victorious. This sept held territory around Granard, and they were therefore resisting invasion by the Leinster king. A.D. 487. Battle of Gráine in Kildare. Muirchertach, king of the Northern Ui Néill, defeats the Leinstermen. A.D. 494. Battle of Tailltiu (=Teltown, near Navan). The Leinstermen are defeated by the sept of Cairbre, son of Niall. A.D. 498. Battle of Inne Mór in Kildare. Leinstermen defeated by Muirchertach, king of the Northern Ui Néill. A.D. 499. Battle of Slemain, in Westmeath. Leinstermen defeated by the sept of Cairbre, son of Niall. A.D. 501. Battle of Cenn Ailbe in Kildare. Leinstermen defeated by the sept of Cairbre. A.D. 503. Battle of Druim Lochmhuidhe. The Ui Néill defeated by the Leinstermen. A.D. 510. Battle of Fremu, in Westmeath. The Leinstermen are victorious over the sept of Fiacha, son of Niall. A.D. 517. Battle of Druim Derge. The Leinstermen are defeated by the sept of Fiacha. This was regarded as the final and decisive battle, which forced the Leinstermen to relinquish their attempts to recover the lost territory in Meath. "By it the plain of Meath was lost and won," says the poet-historian Cenn Faelad in the following century.