of the crown of England. De Burgh took the title of "Lord of Connacht". Wife and children Before 21 April 1225, he married Egidia de Lacy (daughter of Walter de Lacy and his wife Margaret de Braose), with which alliance he acquired the cantred of Eóghanacht Caisil with the castle of Ardmayle in Tipperary. Richard and Egidia had three sons and four daughters: Sir Richard de Burgh (d.1248), Lord of Connaught, Constable of Montgomery Castle married a relative of Eleanor of Provence, and died (without issue) in Poitou. Walter de Burgh, 1st Earl of Ulster (d.1271), Lord of Connaught. William Óg de Burgh (d.1270), the ancestor of the Earls of Clanricarde and Mac William family. Alice de Burgh married Muirchertach O Briain. Margery de Burgh (d. after March 1253) married Theobald Butler, 3rd Chief Butler of Ireland. Matilda de Burgh married Sir Gerald de Prendergast of Beauvoir; they had a daughter, Maud. Daughter de Burgh who married Hamon de Valoynes; they had a daughter, Mabel de Valoynes. Richard de Burgh died shortly before 17 February 1243. Ancestry Notes {{Reflist|2|refs= A New History of Ireland, volume IX, Oxford, 1984; Earls of Ulster and Lords of Connacht, 1205–1460 (De Burgh, De Lacy and Mortimer), p. 170; Mac William Burkes: Mac William Iochtar (de Burgh), Lords of Lower Connacht and Viscounts of Mayo, 1332–1649, p. 171; Burke of Clanricard: Mac William Uachtar (de Burgh), Lords of Upper Connacht and Earls of Clanricard, 1332–1722. </ref> }} References Ancestral Roots of Certain American Colonists Who Came to America Before 1700 by Frederick Lewis Weis; Lines 73-30, 177B-8, 177B-9. The Tribes and customs of Hy-Many, John O'Donovan, 1843 The Surnames of Ireland, Edward MacLysaght, Dublin, 1978. The Anglo-Normans in Co. Galway: the process of colonisation, Patrick Holland, Journal of the Galway Archaeological and Historical Society, vol. 41,(1987–88) Excavation on the line of the medieval town defences of Loughrea, Co. Galway, J.G.A.& H.S., vol. 41, (1987–88) Anglo-Norman Galway; rectangular earthworks and moated sites, Patrick Holland, J.G.A. & H.S., vol. 46 (1993) Rindown Castle: a royal fortress in Co. Roscommon, Sheelagh Harbison, J.G.A. & H.S., vol. 47 (1995) The Anglo-Norman landscape in County Galway; land-holdings, castles and settlements, Patrick Holland, J.G.A.& H.S., vol. 49 (1997) Annals of Ulster at CELT: Corpus of Electronic Texts at University College Cork Annals of Tigernach'' at CELT: Corpus of Electronic Texts at University College Cork Revised edition of McCarthy's synchronisms at Trinity