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Egidia de Lacy
Lady of Connacht
Spouse Richard Mor de Burgh
Richard de Burgh, Lord of Connacht, Justiciar of Ireland

Walter de Burgh, 1st Earl of Ulster
William de Burgh
Margery de Burgh
Unnamed daughter, wife of Gerald de Prendergast
Unnamed daughter, wife of Hamon de Valoignes
Alice de Burgh

Noble family de Lacy
Father Walter de Lacy, Lord of Trim Castle and Ludlow Castle
Mother Margaret de Braose
Born c.1205
Died Ireland

Egidia de Lacy, Lady of Connacht (born c.1205), was a Hiberno-Norman noblewoman, the wife of Richard Mor de Burgh, and the mother of his seven children, including Walter de Burgh, 1st Earl of Ulster. She was also known as Gille de Lacy.

Trim Castle, Co. Meath, Ireland, the birthplace of Egidia de Lacy



Egidia de Lacy was born at Trim Castle, Co. Meath, Ireland about 1205, the daughter of Walter de Lacy, Lord of Trim Castle in Meath and Ludlow Castle in Shropshire (c.1172- 1241), and Margaret de Braose (1177- after 1255). Egidia was also known as Gille. She was one of at least six children. Her brother Gilbert de Lacy (c.1202- 25 December 1230), married Isabel Bigod, by whom he had issue. Her sister Pernel de Lacy (c.1201- after 25 November 1288), married firstly, William St. Omer, and secondly, Ralph VI de Toeni, by whom she had issue.

Egidia'a paternal grandparents were Hugh de Lacy, Lord of Meath, and Rohese of Monmouth. Her maternal grandparents were William de Braose, 7th Baron Abergavenny, and Maud de St. Valery.

Marriage and children

On 21 April 1225, she married Richard Mor de Burgh (1194- 17 February 1243), Lord of Connacht (May 1227- 1242/1243), Justiciar of Ireland (1228- 1232) , the son of William de Burgh and More O' Brien, daughter of Donal Mor mac Turlough O' Brien, King of Thomond and Orlachan MacMurrough of Leinster. The marriage produced seven children:

  1. Richard de Burgh, Lord of Connacht (died 1248)
  2. Walter de Burgh, 1st Earl of Ulster (1230- 28 July 1271), married Aveline FitzJohn, daughter of John FitzGeoffrey, Justiciar of Ireland and Isabel Bigod, by whom he had issue, including Richard Og de Burgh, 2nd Earl of Ulster.
  3. William de Burgh (died 1270), married and had a son, William Liath.
  4. Margery de Burgh (died after 1 March 1253), married Theobald le Botiller, son of Theobald le Botiller, chief Butler of Ireland and Joan du Marais, by whom she had issue. They were ancestors of the Butler Earls of Ormond.
  5. Unnamed daughter who married Gerald de Prendergast, by whom she had issue, including a daughter Maud de Prendergast who in her turn married as his first wife Maurice FitzGerald, 3rd Lord of Offaly. Maurice FitzGerald and Maud de Prendergast were the parents of a daughter, Juliana FitzGerald.
  6. Unnamed daughter who married Hamon de Valoignes, by whom she had issue.
  7. Alice de Burgh


Egidia died on an unknown date in Ireland. She had many notable descendants, including Elizabeth de Burgh, Countess of Ulster, Kings Edward IV of England and Richard III of England, Anne Boleyn, Mary Boleyn, Margaret de Clare, Lady Badlesmere, and the Earls of Ormond.


  1. Charles Cawley, Medieval Lands, Lords of Meath
  2. Charles Cawley, Medieval Lands, Earls of Ulster


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