ULSTER, EARLS OF. The earldom of Ulster was the first title of honour in Ireland of English creation, and for more than a century was the only one. It dates from a grant to de Lacy in 1205.
ceeded in the earldom of Ulster by his daughter Philippa, who married Edmund Mortimer, earl of March. The third Mortimer, earl of Ulster, died unmarried in 1425, when his titles were in herited by Richard Plantagenet, duke of York, whose son Edward ascended the throne as Edward IV. in 1461.
Since that date the earldom of Ulster, which then merged in the Crown, has only been held by members of the royal family. In 1928 it was bestowed upon H.R.H. the Duke of Gloucester.
See, for the de Lacy and de Burgh earls of Ulster, The Chronicle of Florence of Worcester, edited by T. Forester (1854) ; Annals of Ireland by the Four Masters, edited by J. O'Donovan (7 vols., Dublin, 1851) ; The Annals of Loch Ce, edited by W. M. Hennessy, "Rolls Series" (2 vols., 1871) ; Calendar of Documents Relating to Ireland, edited by H. S. Sweetman (5 vols., 1875-86) ; W. W. Shirley, Royal and Historical Letters of the Reign of Henry III., "Rolls Series" (2 vols., r862-66) ; Sir J. T. Gilbert, History of the Viceroys of Ireland (Dublin, 1865). For the later history of the earldom see G. E. C., Complete Peerage, vol. viii. (1898).