Niall Garv O'Donnell Son of Hugh Roe O'Donnell 1497 An army was led by Con O'Donnell against Mac Dermot of Moylurg, ie Teige, the son of Rory Mac Dermot. Only a few of the Connacians joined his army on that occasion, namely, Felim, the son of Manus O'Conor, Lord of Carbury, and Owen O'Rourke, Tanist of Breifny, with their forces. A numerous body of forces was mustered by Mac Dermot, to oppose them at Seaghais (the Curlieus), for the 2 O'Conors came with their tribes and chieftains to join his force and muster. A great part of O'Donnells army made their way by force to the Bealach-Buidhe (now Ballaghboy) of Coirshliabh, under the conduct of Manus O'Conor, Owen O'Rourke, and Niall Garv O'Donnell, on which occasion Cathal O'Rourke and many others were slain in the pass of Bealach-Buidhe. The numerous host of the Sil-Murray rose up in the middle of the army, and defeated O'Donnell. Many were slain and taken prisoners in this battle. AFM Henry Oge O'Neill, the son of Henry, son of Owen, marched with a great army into Tirconnell, and first committed great destruction in Fanad. The young O'Donnell (Con) met this army, on their leaving Fanad, at Bel-atha-daire (Belladerry), on the River Leanainn; but Con O'Donnell was defeated and he himself was killed there, with 160 of his forces, on the 19th of October. His 2 brothers, Niall Garv and Donnell, were taken prisoners. The defeat took place on tuesday, 14th of the Calends of November. Hugh Roe O'Donnell took possession of his lordship again, by consent of God and man. AFM 1498 Niall Garv, the son of Hugh Roe, son of Niall Garv O'Donnell, died in captivity. AFM