Beatrice de Warenne1 
She lived at Wormegay, Norfolk, EnglandG.
Child of Beatrice de Warenne and Doun Bardolf
- William Bardolf+1 d. 1275
Child of Beatrice de Warenne and Hubert de Burgh, 1st Earl of Kent
- Sir John de Burgh+ d. c 1274
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume I, page 417. Hereinafter cited as The Complete Peerage.
- [S22] Sir Bernard Burke, C.B. LL.D., A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages of the British Empire, new edition (1883; reprint, Baltimore, Maryland: Genealogical Publishing Company, 1978), page 569. Hereinafter cited as Burkes Extinct Peerage.
unknown de Burgh 
Child of unknown de Burgh and Alice (?)
- Hubert de Burgh, 1st Earl of Kent+ b. c 1170, d. 12 May 1243
Alice (?)
Child of Alice (?) and unknown de Burgh
- Hubert de Burgh, 1st Earl of Kent+ b. c 1170, d. 12 May 1243
William de Warenne1 
He lived at Wormegay, Norfolk, EnglandG.2
Children of William de Warenne and Beatrix de Pierrepont
- Beatrice de Warenne+2 d. c 12 Dec 1214
- Reginald de Warenne1
- [S22] Sir Bernard Burke, C.B. LL.D., A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages of the British Empire, new edition (1883; reprint, Baltimore, Maryland: Genealogical Publishing Company, 1978), page 569. Hereinafter cited as Burkes Extinct Peerage.
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume I, page 417. Hereinafter cited as The Complete Peerage.
Beatrix de Pierrepont
Children of Beatrix de Pierrepont and William de Warenne
- Beatrice de Warenne+ d. c 12 Dec 1214
- Reginald de Warenne1
- [S22] Sir Bernard Burke, C.B. LL.D., A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages of the British Empire, new edition (1883; reprint, Baltimore, Maryland: Genealogical Publishing Company, 1978), page 569. Hereinafter cited as Burkes Extinct Peerage.
Hugh de Pierrepont
Child of Hugh de Pierrepont
William III de Lanvaley 
He lived at LexdenG.
Child of William III de Lanvaley and Maud Peche
- Hawise de Lanvaley+ d. b 1250
Maud Peche
Child of Maud Peche and William III de Lanvaley
- Hawise de Lanvaley+ d. b 1250
William II de Lanvaley 
Child of William II de Lanvaley and Hawise de Bocland
- William III de Lanvaley+ d. c 1217
Hawise de Bocland 
Child of Hawise de Bocland and William II de Lanvaley
- William III de Lanvaley+ d. c 1217
