Family: Gilbert de Lacy/Isabel le Bigod (F1230)
m. 1225-
Father | Male
Gilbert de Lacy
Born Abt 1202 Died Between 12 Aug and 25 Dec 1230 Meath, Ireland 
Buried Married 1225 [1, 2] Father Walter de Lacy, Lord of Meath | F272 Group Sheet Mother Margaret de Braose, Lady of Trim | F272 Group Sheet
Mother | Female
Isabel le Bigod
Born Abt 1212 Thetford, Norfolk, England Died 1250 Buried Other Spouse John fitz Geoffrey,, Lord of Shere | F923 Married Bef 12 Apr 1234 Father Hugh le Bigod, 3rd Earl of Norfolk | F271 Group Sheet Mother Maud Marshal, Countess of Norfolk Countess of Surrey | F271 Group Sheet
Child 1 | Female
Margaret de Lacy
Born 1228 Ewyas Lacy, Herefordshire, England Died 1256 Buried Spouse John de Verdun | F102 Married Bef 14 May 1244
Child 3 | Female
Maud de Lacy
Born 1230 Dublin, Dublin, Ireland Died 11 Apr 1304 Meath, Ireland Buried
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Sources - [S179] The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed, G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, (Name: Alan Sutton Publishing; Location: Gloucester, U.K.; Date: 2000;).
- [S174] Wikipedia, http://en.wikipedia.org/wiki/Isabel_Bigod.
- [S179] The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed, G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, (Name: Alan Sutton Publishing; Location: Gloucester, U.K.; Date: 2000;).