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Bibliography
  1. Burke, Sir John Bernard, Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages. London: Burkes, 1883. Reprinted: Baltimore: Genealogical Pub Co, 1978. (1985 printing) M-LH H 929.7 BUR 1985, also NYPL AWN 95-9586. Available at https://familysearch.org/search/catalog/246217. Another (which claims to also be the 1883 edition but is earlier 1866 edition) at http://archive.org/details/agenealogicalhi00burkgoog. Information from this source tagged as [Ref: Burke DormantPeerages p[0-9]*].
  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 12-2, Tracton-Zz. London: St Catherine Press, 1959. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP XII/2 [Ap][p0-9].*].
  4. 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 v1[pc][0-9]*].
  5. 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]*].

Sources for birth and parent Information
date:
abt 1220-21 [Ref: CP XII/2 p367],
parents:
[Ref: CP IV AppH p670, CP XII/2 p367, Richardson RoyalAnc v1p283, Sanders Baronies p94],
father:
[Ref: Sanders Baronies p50]
Sources for death Information
date:
[Ref: CP XII/2 p368]
1268 [Ref: Sanders Baronies p50, Sanders Baronies p94]
Sources for burial Information
place:
[Ref: CP XII/2 p368]
Sources with Information about marriage to Alice De SEGRAVE
names:
[Ref: CP IV AppH p670, CP XII/2 p368]
Research Notes:
8th Earl of Warwick, of Earldom cr 1088 [Ref: CP XII/2 p367]
8th Earl of Warwick [Ref: Richardson RoyalAnc v1p283]
Earl of Warwick [Ref: Sanders Baronies p50]

inherited Barony of Hanslope from father [Ref: Sanders Baronies p50]
inherited Barony of Warwick from mother [Ref: Sanders Baronies p93]

1st cousin of the half-blood and heir to Margery, Countess of Warwick [Ref: CP XII/2 p367]

was to pay 100 pounds relief for Barony of Hanslope, and 50m for his sergeanty; he held Hanslope by service of 1 2/3 knights' fees and Hartley maudit by service of chamberlain of the exchequer [Ref: Sanders Baronies p51(1)]

1263: inherited the Earldom of Warwick from his cousin, Margert de Newburg, Countess of Warwick [Ref: Burke DormantPeerages p30]

d.s.p; heir was his sister Isabel [Ref: Sanders Baronies p50]

d.s.p; heir was the son of his sister Isabel [Ref: Sanders Baronies p94]

d.s.p [Ref: CP IV AppH p670]



Pedigree of William MAUDIT, Earl Of Warwick
                                     /-----William I MAUDIT
                            /-----William II MAUDIT
                           |         \-----Hawise
                   /-----William III MAUDIT, Baron Of Hanslope
                  |        |                  /-----Winmar Flandrensis De HAMESLAPE
                  |        |         /-----Michael De HAMESLAPE, Baron Of Hanslope
                  |         \-----Maude De HAMESLAPE
          /-----Robert MAUDIT, Baron Of Hanslope
         |        |                           /-----Ranulph Le Rich
         |        |                  /-----Simon De St. LIZ, Earl Of Huntingdon
         |        |         /-----Simon II De St. LIZ, Earl Of Huntingdon
         |        |        |        |                           /-----Beorn
         |        |        |        |                  /-----Sigurd Digera Earl Of Northumbria
         |        |        |        |         /-----Waltheof II Earl Of Huntingdon
         |        |        |        |        |        |         /-----Ealdred Of Bernicia
         |        |        |        |        |         \-----Aelflaed
         |        |        |         \-----Maud Of Huntingdon
         |        |        |                 |                  /-----Eustace I Count Of Boulogne
         |        |        |                 |         /-----Lambert Of Boulogne, Count Of Lens
         |        |        |                 |        |         \-----Maud Of Louvain
         |        |        |                  \-----Judith Of Lens
         |        |        |                          |         /-----Robert I The Devil Duke Of Normandy
         |        |        |                           \-----Adelaide Of Normandy
         |        |        |                                    \-----Herleve Of Falaise
         |         \-----Isabel De St LIZ
         |                 |                                    /-----Humphrey De Vieilles
         |                 |                           /-----Roger De Beaumont
         |                 |                          |         \-----Aubreye De La Haie
         |                 |                  /-----Sir Robert De Beaumont, Earl Of Leicester
         |                 |                 |        |         /-----Waleran Count Of Meulan
         |                 |                 |         \-----Adelise Of Meulan
         |                 |                 |                  \-----Ode
         |                 |         /-----Sir Robert II De Beaumont, Earl Of Leicester
         |                 |        |        |                  /-----Henry I King Of France
         |                 |        |        |         /-----Hugh Magnus Duke Of France
         |                 |        |        |        |         \-----Anne Of Kiev
         |                 |        |         \-----Isabel De Vermandois, Countess Of Leicester
         |                 |        |                 |         /-----Herbert IV Count Of Vermandois
         |                 |        |                  \-----Adelaide De Vermandois, Countess Of Vermandois
         |                 |        |                           \-----Adela De Valois
         |                  \-----Elizabeth De BEAUMONT
         |                          |                           /-----Ralph De Gael, Earl Of Norfolk
         |                          |                  /-----Ralph De Gael De Montfort, Earl Of Norfolk
         |                          |                 |         \-----Getha
         |                          |         /-----Ralph De MONTFORT, Seigneur Of Montfort-Gael
         |                          |        |        |         /-----William Fitz Osbern, Earl Of Hereford
         |                          |        |         \-----Emma Fitz Osbern
         |                          |        |                  \-----Adelise De TONI
         |                           \-----Amicia De Gael
 /-----William IV MAUDIT, Baron Of Hanslope
|        |         /-----Thurstan BASSET
|         \-----Isabel BASSET
William MAUDIT, Earl Of Warwick
|                                                               /-----Torf The Rich
|                                                      /-----Thorold Seigeur Of Pont-Audemer
|                                                     |         \-----Etemberga De Briquebec
|                                             /-----Humphrey De Vieilles
|                                            |        |         /-----(Unk) Forquelar Of Cirques
|                                            |         \-----Aveline
|                                    /-----Roger De Beaumont
|                                   |         \-----Aubreye De La Haie
|                           /-----Henry De Newburgh, Earl Of Warwick
|                          |        |                           /-----Galeran II Count Of Meulen
|                          |        |                  /-----Hugo I Count Of Meulen
|                          |        |         /-----Waleran Count Of Meulan
|                          |        |        |        |         /-----Walter II Count Of Amiens, Valois, And The Vexin
|                          |        |        |         \-----Oda Of Valois
|                          |        |        |                  \-----Adele
|                          |         \-----Adelise Of Meulan
|                          |                  \-----Ode
|                  /-----Roger De Newburgh, Earl Of Warwick
|                 |        |                                    /-----Fulk Count Of Perche
|                 |        |                           /-----Geoffrey I Viscount Of Chateandun
|                 |        |                          |         \-----Melisende
|                 |        |                  /-----Routrou I Vicount Of Chateaudun, Count Of Mortagne
|                 |        |                 |        |         /-----Renard Lord Of Broyes, Beaufort, And Pithiviers
|                 |        |                 |         \-----Helvidis Heiress Of Montagne
|                 |        |                 |                  \-----Helvidis
|                 |        |         /-----Geoffrey II De Perche, Count Of Perche
|                 |        |        |        |                  /-----William I Count Of Alencon And Bellasme
|                 |        |        |        |         /-----Warin De Belleme, Seigneur De Domfront
|                 |        |        |        |        |         \-----Mathilde
|                 |        |        |         \-----Adeline Of Belleme
|                 |         \-----Margaret De Perche
|                 |                 |                           /-----Hildouin I Seigneur De Rameru
|                 |                 |                  /-----Hildouin II De Rameru
|                 |                 |         /-----Hildouin III De Rameru, Count Of Montdidier And Roucy
|                 |                 |        |         \-----Anonima
|                 |                  \-----Beatrix De Montdidier
|                 |                          |                  /-----Giselbert Count Of Roucy
|                 |                          |         /-----Ebles I Count Of Rheims And Roucy
|                 |                          |        |         \-----(Unk Dau)
|                 |                           \-----Adele De Roucy
|                 |                                   |         /-----Regnier IV Count Of Hainault
|                 |                                    \-----Beatrix Of Hainault
|                 |                                             \-----Hedwig Of France
|         /-----Waleran Beaumont De Newbourge, Earl Of Warwick
|        |        |                                    /-----Rodulf De Warrene
|        |        |                           /-----Ralph II De Warrene
|        |        |                          |        |         /-----Tesselin Vicomte Of Rouen
|        |        |                          |         \-----Beatrice De VASCOEUIL
|        |        |                  /-----William De Warrene, Earl Of Surrey
|        |        |                 |         \-----Emma
|        |        |         /-----William II De Warrene, Earl Of Surrey
|        |        |        |        |         /-----Gherbod The Fleming, Advocate Of St. Bertins
|        |        |        |         \-----Gundred
|        |         \-----Gundred De WARENNE, Countess Of Warwick
|        |                 |                                    /-----Hugh Capet King Of France
|        |                 |                           /-----Robert II The Pious King Of France
|        |                 |                          |         \-----Adelaide Of Poitou
|        |                 |                  /-----Henry I King Of France
|        |                 |                 |        |         /-----William I Count Of Aries And Provence
|        |                 |                 |         \-----Constance Of Provence
|        |                 |                 |                  \-----Adelaide (Blanch) Of Anjou
|        |                 |         /-----Hugh Magnus Duke Of France
|        |                 |        |        |                  /-----Saint Vladimir Grand Prince Of Kiev
|        |                 |        |        |         /-----Jaroslav I Grand Prince Of Kiev
|        |                 |        |        |        |         \-----Rogneide Of Polotzk
|        |                 |        |         \-----Anne Of Kiev
|        |                 |        |                 |         /-----Olaf III SKOTKONUNG, King Of Sweden
|        |                 |        |                  \-----Ingegard
|        |                 |        |                           \-----Astrid
|        |                  \-----Isabel De Vermandois, Countess Of Leicester
|        |                          |                           /-----Herbert III Count Of Vermandois
|        |                          |                  /-----Eudes Count Of Vermandois
|        |                          |                 |         \-----Ermengarde Of Bar
|        |                          |         /-----Herbert IV Count Of Vermandois
|        |                          |        |         \-----Parvie
|        |                           \-----Adelaide De Vermandois, Countess Of Vermandois
|        |                                   |                  /-----Raoul II Seigneur Of Crepy And Valois
|        |                                   |         /-----Raoul III The Great Count Of Valois And Vexin
|        |                                   |        |         \-----Adelaide Of Bretemil
|        |                                    \-----Adela De Valois
|        |                                            |         /-----Nocher III Count Of Bar-Sur-Aube
|        |                                             \-----Adela
 \-----Alice De NEWBOURGE
         |                                                      /-----Turketil De Turqueville
         |                                             /-----Anchetil Sire De Harcourt
         |                                            |         \-----Anceline De Montfort-Sur-Reile
         |                                    /-----Robert De Harcourt, Seigneur De Harcourt Cailvi
         |                                   |         \-----Eve De Boessey, Lady Of Boessey Le Chastel
         |                           /-----William De Harcourt, Seigneur De Harcourt Cailvi
         |                          |        |                  /-----(Unk) De BRAOS
         |                          |        |         /-----William De BRAOS, Baron Of Bramber
         |                          |        |        |         \-----Gunnor
         |                          |         \-----Agnes De BRAOS
         |                  /-----Ivo De Harcourt
         |                 |         \-----Hue De Amboise
         |         /-----Robert De Harcourt
          \-----Alice De Harcourt
                  |         /-----Richard De Camville
                  |        |        |         /-----Alberic De VERE, Baron Of Hedingham
                  |        |         \-----(Unk Dau) De VERE
                  |        |                  \-----Beatrix
                   \-----Millicent De Camville
                           |                                    /-----Manasses II Count Of Rethel
                           |                           /-----Manasses III Count Of Rethel
                           |                          |         \-----Judith Of Roucy
                           |                  /-----Hugh I Count Of Rethel
                           |                 |        |         /-----Giselbert Count Of Roucy
                           |                 |         \-----Yevette
                           |                 |                  \-----(Unk Dau)
                           |         /-----Gervais Count Of Rethel
                           |        |        |                  /-----Milon I Seigneur De La Ferte
                           |        |        |         /-----Guy Seigneur De Montchery And Bray
                           |        |        |        |         \-----(Unk Dau)
                           |        |         \-----Malisinde
                           |        |                 |         /-----William Lord Of Burea
                           |        |                  \-----Hodierna De La Ferte
                            \-----Milicent Of Rethel
                                    |                           /-----Albert II Count Of Namur
                                    |                  /-----Albert III Count Of Namur
                                    |                 |         \-----Regilinde Of Lorraine
                                    |         /-----Godfrey Count Of Namur
                                    |        |        |         /-----Bernard II Duke Of Saxony
                                    |        |         \-----Ida Of Saxony
                                    |        |                  \-----Eilika Of Schweinfurt
                                     \-----Elizabeth Of Namur
                                             |         /-----Roger Count Of Chateau Porcien
                                              \-----Sibylle Of Chateau Porcien
                                                       \-----Ermengarde



Descendants of William MAUDIT, Earl Of Warwick
1. William MAUDIT, Earl Of Warwick m. Alice De SEGRAVE
m. Alice De SEGRAVE father: Gilbert De SEGRAVE mother: Amabil De CHAUCOMBE