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Family:
Marriage: Children:
  1. Geoffrey De MANDEVILLE, Earl Of Essex Death: Abt 14 Sep 1144 in Mildenhall, Co Suffolk
  2. Beatrice De MANDEVILLE Birth: Abt 1105 Death: 19 Apr Abt 1197 in Rinkling, Essex

Bibliography
  1. Burke, Sir John Bernard, Genealogical and Heraldic History of the Peerage Baronetage and Knightage. 99th edition. London: Burke's Peerage, 1949. Available at http://archive.org/details/burkesgenealogic1949unse. Information from this source tagged as [Ref: Burke Peerage [cx0-9]*].
  2. Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 04 Dacre-Dysart. London: St Catherine Press, 1916. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Vol 4 also available at http://archive.org/completepeerageo04byucoka Information from this source tagged as [Ref: CP IV [Ap][p0-9].*].
  3. Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 05 E-Goojerat. London: St Catherine Press, 1926. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP V [Ap][p0-9].*].
  4. Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 11, Ridley-Sinclair. London: St Catherine Press, 1949. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/27141 Information from this source tagged as [Ref: CP XI [Ap][p0-9].*].
  5. Phillips, Chris, Corrections and Additions to the Complete Peerage, http://www.medievalgenealogy.org.uk/cp/index.shtml Information from this source tagged as [Ref: CP++ .*].
  6. Clutterbuck, Robert, History and Antiquities of the County of Hertford, London: Nichols, Son, and Bentley, 1815-27, v1-3. Available at https://familysearch.org/search/catalog/188626. Information from this source tagged as [Ref: Clutterbuck Hertford v[1-3]p[0-9]*].
  7. Foss, Edward, Biographia Juridica, Biographical Dictionary of the Judges of England, London: John Murray, 1870. Available at https://books.google.com/books?id=O0oBAAAAQAAJ Information from this source tagged as [Ref: Foss Judges p[0-9]*].
  8. Fowler, G Herbert, Mandeville, Fitz Geoffrey, and Beauchamp of Eaton, in The Genealogist, New Series, v29 (Oct 1912). NYPL *ZAN-G233 Reels 18-32. LDS Film#086970. Journal available at https://familysearch.org/search/catalog/14199. Article available at https://familysearch.org/search/film/008649244 images 259-262. Information from this source tagged as [Ref: Fowler Mandeville p[0-9]*].
  9. Holloway, Naomi D, The Genealogy of Mary Wentworth, Who Became the Wife of William Brewster, Revised Edition, October 1969. LDS Film#1738313 item#5 Information from this source tagged as [Ref: Holloway WENTWORTH p[0-9a]*].
  10. Keats-Rohan, K.S.B., Domesday Descendants, A Prosopography of Persons Occurring in English Documents 1066-1166. Vol II: Pipe Rolls to Cartae Baronum. Bury St Edmunds, Suffolk: Boydell Press, 2002. NYPL ARF 03-4178 vol 2. Corrections at http://users.ox.ac.uk/~prosop/domesday-descendants-corrigenda.pdf Information from this source tagged as [Ref: Keats-Rohan DD p[0-9]*].
  11. Keats-Rohan, K.S.B., Domesday People, A Prosopography of Persons Occurring in English Documents 1066-1166. Vol I: Domesday Book. Bury St Edmunds, Suffolk: Boydell Press, 1999. NYPL ARF 03-4178 vol 1. Corrections in Volume II (Domesday Descendants) pp 4-5. Further corrections at http://users.ox.ac.uk/~prosop/domesday-people-corrigenda.pdf Information from this source tagged as [Ref: Keats-Rohan DP p[0-9]*].
  12. Richardson, Douglas, Royal Ancestry. Salt Lake City, Utah: Douglas Richardson, 2013. NYPL JFF 16-1184 v1-5 Information from this source tagged as [Ref: Richardson RoyalAnc v4p[0-9]*].
  13. Sanders, I. J., English Baronies, A Study of Their Origin and Descent 1086-1327. Oxford: Clarendon Press, 1960. Information from this source tagged as [Ref: Sanders Baronies p[0-9]*].
  14. Watney, Vernon James, The Wallop Family and their Ancestry, Oxford:John Johnson, 1928. LDS Film#1696491 items 6-9. NYPL ARZ+ (Wallop) (Watney, V. J. Wallop family). Available at https://familysearch.org/search/catalog/213421. Information from this source tagged as [Ref: Watney WALLOP #[0-9]*].

Sources for birth and parent Information
date:
first son [Ref: Keats-Rohan DD p565, Keats-Rohan DP p227, Keats-Rohan DP p452],
parents:
[Ref: CP V p113, CP V p116f, Holloway WENTWORTH p17, Keats-Rohan DD p565, Keats-Rohan DP p227, Richardson RoyalAnc v4p560, Watney WALLOP #647],
father:
[Ref: Foss Judges p427, Keats-Rohan DD p568, Keats-Rohan DP p452, Sanders Baronies p71]
Sources for death Information
date:
abt 1116 [Ref: Keats-Rohan DD p566]
before May 1116 [Ref: CP++ Essex 8/26/2004 (CP V p113)]
prob before May 1116 [Ref: Richardson RoyalAnc v4p560]
Sources with Inaccurate death Information
date:
1129 [Ref: Sanders Baronies p71]
1130 [Ref: Holloway WENTWORTH p17, Watney WALLOP #647]
dead 1130 [Ref: CP V p116f]
in or just before 1130 [Ref: CP V p113]
Sources with Information about marriage to Margaret RIE
date:
first marriage of Margaret [Ref: CP++ Essex 8/26/2004 (CP V p113), Keats-Rohan DD p568 (with corr on proposon web site), Keats-Rohan DD p845, Keats-Rohan DD p877, Keats-Rohan DD p934, Keats-Rohan DP p194, Richardson RoyalAnc v4p560],
names:
[Ref: Clutterbuck Hertford v3p225],
child:
[Ref: CP V p113, CP V p116f, CP++ Essex 8/26/2004 (CP V p113), Foss Judges p427, Holloway WENTWORTH p17, Keats-Rohan DD p568 (with corr on proposon web site), Keats-Rohan DD p845, Richardson RoyalAnc v4p560]
Research Notes:
of Great Waltham, High Easter, Pleshey, and Saffron Waldon, Essex, Streatley, Berkshire, Quarrendon and Amersham, Buckinghamshire, Edmonton and Enfield, Middlesex, Sawbridgeworth, Hertfordshire, Long Compton, Warwickshire, etc [Ref: Richardson RoyalAnc v4p560]
of Great Waltham, Saffron Walden, High Easter, and Pleshey, Essex, Edmonton and Enfield, Middlesex, Sawbridgeworth, Herts, Quarrendon and Amersham, Bucks, Streatley, Berks, Long Compton, co Warwick, etc [Ref: CP V p113]

heir of his father [Ref: Richardson RoyalAnc v4p560]

1085/6: attested a charter by his father for Westminster [Ref: Keats-Rohan DP p452]

1086: appears in Domesday Book as 'Willelm Nepos Gaufridi De magnauilla', or nephew or grandson of Geoffrey; possibly an error for William son of Geoffrey [Ref: Keats-Rohan DP p493]

c1100: heir of his father [Ref: Keats-Rohan DD p568 (with corr on proposon web site), Keats-Rohan DP p227]

inherited Barony of Pleshy from father [Ref: Sanders Baronies p71]

succeeded his father as constable of the Tower of London [Ref: Keats-Rohan DD p568 (with corr on proposon web site)]

Keeper of Tower of London [Ref: Holloway WENTWORTH p17]

1101: office of constable of the Tower of London led to his undoing when Ranulf, bishop of Durham, escaped from his custody [Ref: Keats-Rohan DD p568 (with corr on proposon web site)]

punished by the forfeiture of part of his holdings, Walden and Great Waltham in Essex, and Sawbridgeworth, Hertfordshire [Ref: Keats-Rohan DD p568 (with corr on proposon web site)]

a charter of Henry I dated before May 1116 implies that William was dead by that time. Though there is some doubt about the charter's authenticity, his widow's remarriage to a man who died in 1120 implies that he was dead long before 1130, so that Round's inference about the date of his death from the pipe roll must be incorrect [Ref: CP++ Essex 8/26/2004 (CP V p113)]

heirs by 1190 were the descendants of his daughter Beatrice [Ref: Keats-Rohan DD p568 (with corr on proposon web site)]



Pedigree of William De MANDEVILLE, Baron Of Pleshy
 /-----Geoffrey De MANDEVILLE, Baron Of Pleshy
William De MANDEVILLE, Baron Of Pleshy
 \-----Athelaise



Descendants of William De MANDEVILLE, Baron Of Pleshy
1. William De MANDEVILLE, Baron Of Pleshy m. Margaret RIE
m. Margaret RIE father: Eudo De RIE, Dapifer mother: Rohais

2nd generation

2. Geoffrey De MANDEVILLE, Earl Of Essex m. Rohese De VERE
m. Rohese De VERE father: Alberic II De VERE, Baron Of Hedingham mother: Adeliza De CLARE
3. Beatrice De MANDEVILLE m1. Hugh TALBOT m2. William De SAY
m. Hugh TALBOT father: Richard TALBOT mother: (Unk dau) De GOURNAY
m. William De SAY father: Jordan De SAY mother: Lucy De RUMILLY

3rd generation

4. Ernulf De MANDEVILLE m. Alice De Oilly
m. Alice De Oilly father: Robert De Oilly, Baron Of Hook Norton mother: Edith SIGULFSSON
6. William De MANDEVILLE, Earl Of Essex m1. m2. Hawise Countess Of Aumale
m. Hawise Countess Of Aumale father: William Le GROS, Count Of Aumale mother: Cecily Lady Of Skipton
11. Richard TALBOT m. (Unk dau) De BULMER
m. (Unk dau) De BULMER father: Stephen De BULMER mother: Cecily De MUSCHAMP
12. William De SAY m. Aufrica
m. Aufrica father: William The Lion King Of Scots
13. Geoffrey De SAY m1. Alice De CHESNEY m2. Alice De VERE
m. Alice De CHESNEY father: John De CHESNEY mother: Sibil
m. Alice De VERE father: Aubrey III De VERE, Earl Of Oxford mother: Agnes Lucia Of Essex

4th generation

15. Geoffrey De MANDEVILLE m.
18. Gilbert De MANDEVILLE m.
19. Geoffrey De MANDEVILLE m. Maud De BIDUN
m. Maud De BIDUN father: John De BIDUN, Baron Of Lavendon mother: Alice MAUDIT
21. Gilbert TALBOT m.
22. William De SAY m.
23. Beatrice De SAY m. Geoffrey FITZ PIERS, Earl Of Essex
m. Geoffrey FITZ PIERS, Earl Of Essex father: Piers De LUTEGARESHALE mother: Maud
24. Maud De Say m. Sir William De BOCLANDE
m. Sir William De BOCLANDE father: Hugh De BOCLANDE mother: Maud
26. Sir Geoffrey De SAY, Baron Of West Greenwich m. Hawise De CLARE
m. Hawise De CLARE father: Richard De CLARE, Earl Of Hertford, MC Surety mother: Amice MEULANT, Countess Of Gloucester
27. Geoffrey De SAY m1. m2. Margaret De BRIWERE m3. Aline
m. Margaret De BRIWERE father: Sir William De BRIWERE, Baron Of Horsley mother: Beatrice De VALLE
m. Aline

5th generation

28. Geoffrey De MANDEVILLE m.
29. Ralph De MANDEVILLE m. Rohese
m. Rohese
30. Geoffrey Fitz GEOFFREY De TEYL m.
31. Robert Fitz GEOFFREY m.
32. William Fitz GEOFFREY m. Olive De BEAUCHAMP
m. Olive De BEAUCHAMP father: Oliver De BEAUCHAMP mother: Agnes
33. Richard TALBOT m. Aline BASSET
m. Aline BASSET father: Sir Alan BASSET mother: Aline De GAI
34. Aufrica De SAY m.
38. Maud FITZ GEOFFREY De MANDEVILLE m1. Henry De BOHUN, Earl Of Hereford, MC Surety m2. Roger De DAUNTSEY
m. Henry De BOHUN, Earl Of Hereford, MC Surety father: Humphrey IV De BOHUN, Baron Of Trowbridge mother: Margaret Of Huntingdon
m. Roger De DAUNTSEY
40. Maud De BOCLANDE m. William D'AVRANCHES, Baron Of Folkestone
m. William D'AVRANCHES, Baron Of Folkestone father: Simon D'AVRANCHES, Baron Of Folkestone
42. Joan De BOCLANDE m1. William MUSARD m2. Robert De FERRERS m3. Geoffrey D'AVRANCHES
m. William MUSARD father: Richard MUSARD, Baron Of Staveley
m. Robert De FERRERS father: William FERRERS, Earl Of Derby mother: Sibyl De BRAOISE
m. Geoffrey D'AVRANCHES
43. Sir William De SAY, Baron Of West Greenwich m1. Sibyl m2. Mary
m. Sibyl
m. Mary