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Family:
Bibliography
  1. 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].*].
  2. 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].*].
  3. 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++ .*].
  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 v4p[0-9]*].

Sources for birth and parent Information
date:
elder son [Ref: CP XI p467(o)]
first son [Ref: CP++ Say 2/11/2003 (CP XI p467(o))],
parents:
[Ref: CP V p116f, Richardson RoyalAnc v4p562],
father:
[Ref: CP XI p467(o)]
Sources for death Information
date:
before 1 Jan 1198 [Ref: CP XI p467(o)]
before 8 Mar 1197/8 [Ref: CP V p116f, CP++ Say 2/11/2003 (CP XI p467(o))]
Research Notes:
d.s.p [Ref: CP V p116f]



Pedigree of William De SAY
                            /-----William De SAY
                   /-----Jordan De SAY
                  |        |                  /-----Robert De Grentmesnil
                  |        |         /-----Hugh De Grantmesnil, Baron Of Leicester
                  |        |        |        |         /-----Girole De Echafour
                  |        |        |         \-----Hawise De Echafour
                  |        |        |                 |         /-----Thursten De Bastenburgh
                  |        |        |                  \-----Gisela De Bastenburgh
                  |         \-----Agnes De GRANDMESNIL
                  |                 |                           /-----Ivo Count Of Belemontensis
                  |                 |                  /-----Ivo I Count Of Beaumont
                  |                 |         /-----Ivo II Count Of Beaumont
                  |                 |        |         \-----Emma
                  |                  \-----Adeliza Of Beaumont
                  |                           \-----Judith
          /-----William De SAY
         |        |                  /-----Rainfred De RUMILLY
         |        |         /-----Robert De RUMILLY, Baron Of Skipton
         |         \-----Lucy De RUMILLY
 /-----Geoffrey De SAY
|        |                  /-----Geoffrey De MANDEVILLE, Baron Of Pleshy
|        |         /-----William De MANDEVILLE, Baron Of Pleshy
|        |        |         \-----Athelaise
|         \-----Beatrice De MANDEVILLE
|                 |                  /-----Hubert De Ryes
|                 |         /-----Eudo De RIE, Dapifer
|                  \-----Margaret RIE
|                          |                                    /-----Richard I The Fearless Duke Of Normandy
|                          |                           /-----Godfrey Count Of Brionne
|                          |                          |         \-----Gunnora
|                          |                  /-----Gilbert Count Of Brionne
|                          |         /-----Richard FITZ GILBERT De CLARE, Baron Of Clare
|                           \-----Rohais
|                                   |                  /-----Osbern De Bolbec, Seigneur Of Longueville
|                                   |         /-----Walter Giffard Lord Of Longueville
|                                   |        |        |         /-----(Unk) Forquelar Of Cirques
|                                   |        |         \-----Wevie
|                                    \-----Rohese GIFFARD
|                                            |         /-----Gerard De FLEITELL
|                                             \-----Ermengarde FLATEL
William De SAY
|                                    /-----Ralph De CHESNEY
|                           /-----Ralph De CHESNEY
|                  /-----Ralph De CHESNEY
|                 |         \-----Matilda
|         /-----John De CHESNEY
|        |        |                           /-----Sir Robert De Courbepine
|        |        |                  /-----Gilbert De MAMINOT, Bishop Of Lisieux
|        |        |         /-----Hugh MAMINOT, Baron Of West Greenwich
|        |         \-----Alice MAMINOT
|        |                 |         /-----(Unk) PEVEREL
|        |                  \-----(Unk) PEVEREL
 \-----Alice De CHESNEY
          \-----Sibil



Descendants of William De SAY
1. William De SAY