Hugh Boy O'Donnell Son of Hugh Oge (Hugh Dubh) 1515 Donnell, the son of Hugh Roe O'Donnell, was slain by Hugh Boy O'Donnell, at Tuath-bhladhach, on 25 th of November. AFM 1529 The son of Mac Dowell (Mac Dugald) of Scotland was slain by Hugh Boy O'Donnell with one stroke of a sword, on the theshold of the castle of Cuil-mic-an-treoin (now Castleforward, Raphoe). AFM 1530 A great depredation was committed by Hugh Boy O'Donnell in Gaileanga (Gallen, in the county of Mayo). AFM 1531 The castle of Belleek was taken by Hugh Boy O'Donnell, from which followed the disturbance of Tirconnell. AFM Maguire proceeded with an army into Tirconnell, at the instance of O'Donnell, for O'Donnels sons were at strife with each other, for fear that the one might attain to the chieftainship in preference to the other, after their fathers death; for the name and renown of Manus O'Donnell had spread not only through all Tirconnell, but through external territories; and he was oppressing his own kindred. O'Donnell was afraid that they would commit fratricide upon each other, and that his own power would, in consequence, be weakened, wherefore he had invited Maguire to come to him, to see whether they could reconcile Manus with his relatives through friendship and brotherly love. Maguire and Hugh Boy O'Donnell afterwards marched with their troops until they arrived at the River Fin; and they plundered all the territory that was under the jurisdiction of Manus, from border to border. Manus at this time was on the Green of Castlefinn, with all his forces assembled; and the sons of Manus, with a party of their people, set out across Scairbh-Begoige, opposite the town castle, to await and meet the army that was advancing towards them. They were routed by Maguire and Hugh Boy, and forced to retreat into the castle for protection. They all then returned to their several fortresses. AFM 1536 At this time war and contentions arose between O'Donnell and all the chieftains of lower Connaught, with the single exception of Brian, the son of Owen O'Rourke, who did not on this occasion, join either side. An army was, therefore, mustered O'Donnell and his sons (excepting Manus alone, who did not come into his fathers army on this expedition, because he was biassed by O'Neill). These forces marched from Ballyshannon in the afternoon, and pitched their camp that night between the rivers Buff and Drowes; and there having taken dinner and refreshments they sent guards and sentinels to watch the pass between them and Magh gCeidne, for they were afraid that the O'Conors, with all their forces, might surprise them that night in their camp, inasmuch as they were then all assembled in a flaming body at Sligo, threatening to give battle to O'Donnell as soon as they should meet him. The first person who went out to watch for the army was Niall O'Boyle, the son of Turlough, who supposed that his enemies would soon come up to him, and that he would be able to wreak his vengance upon them. But the people of Hugh Boy, the son of O'Donnell, went at the same time, without giving notice to O'Boyle, or his people, to guard another pass. Both parties met and neither of them recognising the other, they proceeded to strike at each other. Fiercly and resolutely did O'Boyle fight in this skirmish against his enemies (as he thought), and he unsparingly cut off great numbers of the opposite host; but as he was slaughtering them in this manner, they formed a huge circle around him, so that he at last met his death from his own true and faithful friends, on the second of the Calends of August. The death of the person being here slain, ie Niall, the son of Turlough, was a cause of great grief to the poor and indigent, and to the literati and the kerns. Although O'Donnell was much grieved at this lamentable occurrence, it did not, nevertheless, prevent his projected expedition, but he marched onwards as far as Finfir. A party of Cathal Oge O'Conors cavalry, composed of the O'Hartes, set out for Braghait-Chuillighe, and a troop of O'Donnells cavalry marched likewise aginst them; and they met at Bealach-Duin-iarainn, where the skirmish ensued, in which a distinguished horseman of O'Hartes was slain, whereupon both parties withdrew for that time. O'Donnell remained within his own camp that night, and on the merrow, marched on to Fearsat-Reanna-an-Liagain, to cross over to Cuil-irrae. O'Conor was at Sligo, preparing his people to march against O'Donnell to the same Fearsat, to prevent his crossing it. While the tide was full both armies were reconnoitering and observing each other. O'Conor seeing that he had not equal forces with O'Donnells, and being, together with his army, seized with terror and awe at the sight of the arrangement and array of O'Donnels troops, and the position of his cannon, and other military engines, on the borders of the Fearsat, resolved not to come to an engagement with him at that place, but to wait until he should find him less prepared somewhere else. O'Donnell crossed the Fearsat without meeting any opposition, it being left without defence, without guard against him. Some of the chieftains of Lower Connaught sent a party to skirmish with O'Donnels army; but they were responded to and opposed by the other hist, and one who was a great loss to the Mac Donoughs, namely,