About this time, Eoin MacDomhnaill, brother to Domhnall of Harlaw, king of Argyle and the Islands, acquired the Feudal title to the Glens of Antrim through marriage to the heiress of Biset. Having taken possession, the MacDonnells did not concern themselves about Feudal duties to an overlord, an Earl of Mortimer or an Earl of March. Afterwards, in the official language of the Elizabethan government, the MacDonnells of the Glens were intruding Scots: a point of view which their chief, Somhairle Buidhe, countered bluntly by proclaiming that "plainly the English have no right to be in Ireland." In the fourteenth century and still more in the fifteenth, the Irish built castles for themselves and took possession of many castles built for their subjugation. They turned the policy of incastellation against its proprietors and patentees. In this they were facilitated by the galloglass organisation, always ready for military service. The principal family of galloglass chiefs, the MacDonnells, had for their heraldic motto "Toujours prêts"--"always ready." In this period, too, a number of the old petty kingdoms, after long abeyance under Feudal lords, once more emerge into prominence. In 1423, the Irish of Tír Eoghain and Tir Conaill, aided now by the Irish of East Ulster, defeat the viceroy, the Earl of Ormond, at Dundalk. In 1425, the Earl of March, heir to the lordship of Ulster and Connacht, is sent to Ireland as viceroy and receives the formal submission of the Ulster princes. This does not count for much, for in five years time Eoghan O'Neill, son of the king of Ulster, received in his father's name the allegiance of O'Farrell, king of Annaly, O'Connor, king of Offaly, O'Molloy, king of Fir Ceall, O'Melaghlin, titular king of Meath, and other Irish rulers in the midlands; also of Nugent, Baron of Delvin, the Plunkets, the Herberts, and the Foreigners of Westmeath in general. This, in the year 1430, marks the highest point of power reached by the kings of Tir Eoghain at any time. On his father's death in 1432, Eoghan O'Neill, says the annalist, "went to Tulach Óg, and was there inaugurated king on the stone of the kings by the will of God and men, of bishops and chief poets." In the year following, 1433, Margaret, daughter of O'Carroll, king of Eile, and wife of O'Connor, king of Offaly, held those two festivals for the learned of Ireland that have been justly described as national events of high and singular importance, proving that the Irish of that time acted on a clear and definite consciousness of nationality. It should however, be made plain that Margaret's achievement marked no new expression of the national consciousness, either in conception or execution. Eighty-two years earlier, in 1351, what we may call a fair of Irish learning was held by William O'Kelly, king of Ui Maine, in his own territory.