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Family:
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 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].*].
  3. 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 v5p[0-9]*].

Sources for birth and parent Information
date:
first son [Ref: CP XII/2 p669],
parents:
[Ref: Burke Peerage p51, CP XII/2 p669, Richardson RoyalAnc v5p366]
Sources for death Information
date:
[Ref: CP XII/2 p669]
7 Edward IV [Ref: Burke Peerage p51]
Research Notes:



Pedigree of Robert De WILLOUGHBY
                                                                /-----Sir William De WILLOUGHBY
                                                       /-----Sir Robert WILLOUGHBY, Lord Willoughby
                                                      |         \-----Alice BEKE
                                              /-----John WILLOUGHBY, Lord Willoughby
                                             |        |         /-----Sir Edmund DEINCOURT, Lord Deincourt
                                             |         \-----Margaret DEINCOURT
                                             |                  \-----Isabel De MOHUN
                                     /-----Sir John WILLOUGHBY, Lord Willoughby
                                    |        |                  /-----Thomas ROSCELYN
                                    |        |         /-----Peter ROSCELYN
                                    |         \-----Joan ROSCELYN
                                    |                  \-----Mabel
                            /-----Sir Robert De WILLOUGHBY, Lord Willoughby
                           |        |                           /-----Robert De UFFORD, Justiciar Of Ireland
                           |        |                  /-----Sir Robert De UFFORD, Lord Ufford
                           |        |                 |         \-----Mary
                           |        |         /-----Robert De UFFORD, K.G., Earl of Suffolk
                           |        |        |        |         /-----Robert De VALOINES
                           |        |        |         \-----Cecily De VALOINES
                           |        |        |                  \-----Eve
                           |         \-----Cecily De UFFORD
                           |                 |                  /-----Geoffrey De NORWICH
                           |                 |         /-----Sir Walter De NORWICH
                           |                  \-----Margaret De NORWICH
                           |                          |         /-----Sir John De HEDERSETE
                           |                           \-----Catherine De HEDERSETE
                   /-----William De WILLOUGHBY, K.G., Lord Willoughby
                  |        |                                    /-----Eudo La ZOUCHE
                  |        |                           /-----William La ZOUCHE, Lord Zouche
                  |        |                          |         \-----Milicent De CANTELOU
                  |        |                  /-----Eudo La ZOUCHE
                  |        |                 |        |         /-----Sir John LOVEL, Lord Lovel Of Titchmarsh
                  |        |                 |         \-----Maud LOVEL
                  |        |                 |                  \-----Isabel De BOSCO
                  |        |         /-----William La ZOUCHE, Lord Zouche
                  |        |        |        |         /-----William INGE
                  |        |        |         \-----Joan INGE
                  |        |        |                 |         /-----Henry GRAPINEL
                  |        |        |                  \-----Margaret GRAPINEL
                  |         \-----Margaret ZOUCHE
                  |                 |                           /-----Sir Robert De ROS, Baron Of Helmsley
                  |                 |                  /-----William De ROS, Lord Ros Of Helmsley
                  |                 |                 |         \-----Isabel D'ALBINI
                  |                 |         /-----William De ROS, Lord Ros Of Helmsley
                  |                 |        |        |         /-----Sir John De VAUX
                  |                 |        |         \-----Maud De VAUX
                  |                 |        |                  \-----Joan De PELEVILE
                  |                  \-----Elizabeth De Ros
                  |                          |                  /-----Guncelin BADLESMERE
                  |                          |         /-----Bartholomew De BADLESMERE, Lord Badlesmere
                  |                           \-----Margery De BADLESMERE
                  |                                   |         /-----Thomas DeCLARE, Lord Of Thomond
                  |                                    \-----Margaret De CLARE
                  |                                             \-----Julian FITZ MAURICE
          /-----Sir Thomas De WILLOUGHBY
         |        |                                             /-----John IV Le STRANGE
         |        |                                    /-----John V LESTRANGE, Lord Strange
         |        |                                   |         \-----Joan De SOMERY
         |        |                           /-----John VI LESTRANGE, Lord Strange
         |        |                          |        |         /-----Eble De MONTZ
         |        |                          |         \-----Alienore De MONTZ
         |        |                          |                  \-----Joan De BOHUN
         |        |                  /-----Sir Roger Le STRANGE, Lord Strange
         |        |                 |         \-----Iseult
         |        |         /-----Roger Le STRANGE, Lord Strange Of Knockyn
         |        |        |         \-----Maud
         |         \-----Lucy Le STRANGE
         |                 |                                    /-----Sir John FITZALAN, Earl Of Arundel
         |                 |                           /-----Sir John FITZALAN, Earl Of Arundel
         |                 |                          |         \-----Maud De VERDUN
         |                 |                  /-----Sir Richard FITZ ALAN, Earl Of Arundel
         |                 |                 |        |         /-----Sir Roger MORTIMER, Baron Of Wigmore
         |                 |                 |         \-----Isabel MORTIMER
         |                 |                 |                  \-----Maud De BRAOISE
         |                 |         /-----Sir Edmund FITZ ALAN, Earl Of Arundel
         |                 |        |        |                  /-----Manfred III Margrave Of Saluzzo
         |                 |        |        |         /-----Thomas I Margrave Of Saluzzo
         |                 |        |        |        |         \-----Beatrice Of Savoy
         |                 |        |         \-----Alasia Of Saluzzo
         |                 |        |                 |         /-----George Of Ceva, Marquis Of Ceva
         |                 |        |                  \-----Luisa Of Ceva
         |                 |        |                           \-----Menzia De ESTE
         |                  \-----Aline FITZALAN
         |                          |                           /-----William De WARENNE, Earl Of Surrey
         |                          |                  /-----John De WARENNE, Earl Of Surrey
         |                          |                 |         \-----Maud MARSHALL
         |                          |         /-----Sir William De WARENNE
         |                          |        |        |         /-----Hugh X De Lusignan, Count Of La Marche
         |                          |        |         \-----Alfais De LUSIGNAN
         |                          |        |                  \-----Isabel Of Angouleme
         |                           \-----Alice De WARENNE
         |                                   |                  /-----Sir Hugh De VERE, Earl Of Oxford
         |                                   |         /-----Sir Robert De VERE, Earl Of Oxford
         |                                   |        |         \-----Hawise De QUINCEY
         |                                    \-----Joan De VERE
         |                                            |         /-----Gilbert De SANFORD
         |                                             \-----Alice De SANFORD
         |                                                      \-----Lorette La ZOUCHE
 /-----Sir Robert De WILLOUGHBY
|        |                                                      /-----Sir John FITZALAN, Earl Of Arundel
|        |                                             /-----Sir Richard FITZ ALAN, Earl Of Arundel
|        |                                            |         \-----Isabel MORTIMER
|        |                                    /-----Sir Edmund FITZ ALAN, Earl Of Arundel
|        |                                   |        |         /-----Thomas I Margrave Of Saluzzo
|        |                                   |         \-----Alasia Of Saluzzo
|        |                                   |                  \-----Luisa Of Ceva
|        |                           /-----Sir Richard FITZ ALAN, Earl Of Arundel And Surrey
|        |                          |        |                  /-----John De WARENNE, Earl Of Surrey
|        |                          |        |         /-----Sir William De WARENNE
|        |                          |        |        |         \-----Alfais De LUSIGNAN
|        |                          |         \-----Alice De WARENNE
|        |                          |                 |         /-----Sir Robert De VERE, Earl Of Oxford
|        |                          |                  \-----Joan De VERE
|        |                          |                           \-----Alice De SANFORD
|        |                  /-----Sir John FITZ ALAN, Lord Arundel
|        |                 |        |                           /-----Henry III King Of England
|        |                 |        |                  /-----Edmund Crouchback PLANTAGENET, King Of Sicily
|        |                 |        |                 |         \-----Eleanor Of Provence
|        |                 |        |         /-----Henry PLANTAGENET, Earl Of Lancaster
|        |                 |        |        |        |         /-----Robert Count Of Artois
|        |                 |        |        |         \-----Blanche Of Artois
|        |                 |        |        |                  \-----Matilda Of Brabant
|        |                 |         \-----Eleanor PLANTAGENET
|        |                 |                 |                  /-----Patric De CHAWORTH, Baron Of Kempsford
|        |                 |                 |         /-----Sir Patric CHAWORTH, Baron Of Kempsford
|        |                 |                 |        |         \-----Hawise De LONDRES
|        |                 |                  \-----Maud CHAWORTH
|        |                 |                          |         /-----William De BEAUCHAMP, Earl Of Warwick
|        |                 |                           \-----Isabel De BEAUCHAMP
|        |                 |                                    \-----Maud FITZJOHN
|        |         /-----Sir Richard ARUNDEL
|        |        |        |                                    /-----John MAUTRAVERS
|        |        |        |                           /-----Sir John MAUTRAVERS
|        |        |        |                          |         \-----Joan
|        |        |        |                  /-----Sir John MAUTRAVERS, Lord Mautravers
|        |        |        |                 |        |         /-----Sir Ralph De GORGES
|        |        |        |                 |         \-----Eleanor De GORGES
|        |        |        |         /-----Sir John MAUTRAVERS
|        |        |        |        |        |                  /-----Sir Thomas De BERKELEY, Lord Berkeley
|        |        |        |        |        |         /-----Sir Maurice De BERKELEY, Lord Berkeley
|        |        |        |        |        |        |         \-----Joan De FERRERS
|        |        |        |        |         \-----Milicent De BERKELEY
|        |        |        |        |                 |         /-----Eudo La ZOUCHE
|        |        |        |        |                  \-----Eve ZOUCHE
|        |        |        |        |                           \-----Milicent De CANTELOU
|        |        |         \-----Eleanor MAUTRAVERS, Baroness Mautravers
|        |        |                  \-----Gwenthlin
|         \-----Joan De ARUNDEL
|                  \-----Alice
Robert De WILLOUGHBY
|                                                               /-----Sir Robert De WELLES
|                                                      /-----Adam De WELLES, Lord Welles
|                                                     |         \-----Isabel De PERITON
|                                             /-----Adam De WELLES, Lord Welles
|                                            |        |         /-----Sir John ENGAINE
|                                            |         \-----Joan ENGAINE
|                                            |                  \-----Joan GREINVILLE
|                                    /-----John De WELLES, Lord Welles
|                                   |        |                  /-----Hugh BARDOLF, Lord Bardolf
|                                   |        |         /-----Sir Thomas BARDOLF, Lord Bardolf
|                                   |        |        |         \-----Isabel De AGUILLON
|                                   |         \-----Margaret BARDOLPH
|                                   |                 |         /-----William De GRANDSON, Seigneur De Grandson
|                                   |                  \-----Agnes De GRANDSON
|                                   |                           \-----Blanche De SAVOIE
|                           /-----Sir John De WELLES, Lord Welles
|                          |        |                           /-----Sir Robert De ROS, Baron Of Helmsley
|                          |        |                  /-----William De ROS, Lord Ros Of Helmsley
|                          |        |                 |         \-----Isabel D'ALBINI
|                          |        |         /-----William De ROS, Lord Ros Of Helmsley
|                          |        |        |        |         /-----Sir John De VAUX
|                          |        |        |         \-----Maud De VAUX
|                          |        |        |                  \-----Joan De PELEVILE
|                          |         \-----Maud De ROS
|                          |                 |                  /-----Guncelin BADLESMERE
|                          |                 |         /-----Bartholomew De BADLESMERE, Lord Badlesmere
|                          |                  \-----Margery De BADLESMERE
|                          |                          |         /-----Thomas DeCLARE, Lord Of Thomond
|                          |                           \-----Margaret De CLARE
|                          |                                    \-----Julian FITZ MAURICE
|                  /-----Eudo De WELLES
|                 |        |                                    /-----Roger De MOWBRAY, Lord Mowbray
|                 |        |                           /-----Sir John De MOWBRAY, Lord Mowbray
|                 |        |                          |         \-----Rohese CLARE
|                 |        |                  /-----John De MOWBRAY, Lord Mowbray
|                 |        |                 |        |         /-----William De BREWES, Lord Of Gower
|                 |        |                 |         \-----Aliva De BRAOS
|                 |        |                 |                  \-----Agnes
|                 |        |         /-----John De MOWBRAY, Lord Mowbray
|                 |        |        |        |                  /-----Edmund Crouchback PLANTAGENET, King Of Sicily
|                 |        |        |        |         /-----Henry PLANTAGENET, Earl Of Lancaster
|                 |        |        |        |        |         \-----Blanche Of Artois
|                 |        |        |         \-----Joan PLANTAGENET
|                 |        |        |                 |         /-----Sir Patric CHAWORTH, Baron Of Kempsford
|                 |        |        |                  \-----Maud CHAWORTH
|                 |        |        |                           \-----Isabel De BEAUCHAMP
|                 |         \-----Eleanor De MOWBRAY
|                 |                 |                           /-----Sir John De SEGRAVE, Lord Segrave
|                 |                 |                  /-----Sir Stephen De SEGRAVE, Lord Segrave
|                 |                 |                 |         \-----Christine De PLESCY
|                 |                 |         /-----John SEGRAVE, Lord Segrave
|                 |                 |        |        |         /-----Sir Richard FITZ ALAN, Earl Of Arundel
|                 |                 |        |         \-----Alice FITZ ALAN
|                 |                 |        |                  \-----Alasia Of Saluzzo
|                 |                  \-----Elizabeth SEGRAVE, Baroness Segrave
|                 |                          |                  /-----Edward I King Of England
|                 |                          |         /-----Thomas Of Brotherton PLANTAGENET, Earl Of Norfolk
|                 |                          |        |         \-----Marguerite Of France
|                 |                           \-----Margaret PLANTAGENET, Dutchess Of Norfolk
|                 |                                   |         /-----Sir Roger HALYS
|                 |                                    \-----Alice HALYS
|                 |                                             \-----Alice
|         /-----Sir Lionel De WELLES, K.G., Lord Welles
|        |        |                                             /-----Sir Ralph FITZWILLIAM, Lord Fitzwilliam
|        |        |                                    /-----Robert FITZRALPH, Lord Fitzwilliam
|        |        |                           /-----Ralph De GREYSTOKE, Lord Greystoke
|        |        |                          |        |         /-----Robert NEVILLE
|        |        |                          |         \-----Elizabeth NEVILLE
|        |        |                          |                  \-----Angharad Ferch Gruffudd
|        |        |                  /-----William De GREYSTOKE, Lord Greystoke
|        |        |                 |        |                  /-----James De AUDLEY
|        |        |                 |        |         /-----Sir Hugh De AUDLEY, Lord Audley
|        |        |                 |        |        |         \-----Ela LONGESPEE
|        |        |                 |         \-----Alice AUDLEY
|        |        |                 |                 |         /-----Sir Edmund De MORTIMER, Lord Mortimer
|        |        |                 |                  \-----Isolda MORTIMER
|        |        |         /-----Ralph De GREYSTOKE, Lord Greystoke
|        |        |        |        |                           /-----Sir Hugh FITZHENRY, Lord Of Ravensworth
|        |        |        |        |                  /-----Henry FITZHUGH, Lord FitzHugh
|        |        |        |        |                 |         \-----Aubrey
|        |        |        |        |         /-----Sir Henry FITZHENRY
|        |        |        |        |        |        |         /-----John De BULMER
|        |        |        |        |        |         \-----Eva De BULMERE
|        |        |        |        |        |                  \-----Tiphaine De MOREWICK
|        |        |        |         \-----Joan FITZHUGH
|        |        |        |                 |         /-----Sir Richard De FOURNEUX
|        |        |        |                  \-----Joan De FOURNEUX
|        |         \-----Maud De GREYSTOKE
|        |                 |                                    /-----Roger De CLIFFORD
|        |                 |                           /-----Robert De CLIFFORD, Lord Clifford
|        |                 |                          |         \-----Isabel De VESPONT
|        |                 |                  /-----Robert De CLIFFORD, Lord Clifford
|        |                 |                 |        |         /-----Thomas DeCLARE, Lord Of Thomond
|        |                 |                 |         \-----Maud De CLARE
|        |                 |                 |                  \-----Julian FITZ MAURICE
|        |                 |         /-----Sir Roger CLIFFORD, Lord Clifford
|        |                 |        |        |                  /-----Sir Thomas De BERKELEY, Lord Berkeley
|        |                 |        |        |         /-----Sir Maurice De BERKELEY, Lord Berkeley
|        |                 |        |        |        |         \-----Joan De FERRERS
|        |                 |        |         \-----Isabel BERKELEY
|        |                 |        |                 |         /-----Eudo La ZOUCHE
|        |                 |        |                  \-----Eve ZOUCHE
|        |                 |        |                           \-----Milicent De CANTELOU
|        |                  \-----Katherine CLIFFORD
|        |                          |                           /-----William De BEAUCHAMP, Earl Of Warwick
|        |                          |                  /-----Sir Guy De BEAUCHAMP, Earl Of Warwick
|        |                          |                 |         \-----Maud FITZJOHN
|        |                          |         /-----Thomas BEAUCHAMP, Orig K.G., Earl Of Warwick
|        |                          |        |        |         /-----Ralph VII De TOENI, Baron Of Flamstead
|        |                          |        |         \-----Alice De TOENI
|        |                          |        |                  \-----Mary
|        |                           \-----Maud De BEAUCHAMP
|        |                                   |                  /-----Sir Edmund De MORTIMER, Lord Mortimer
|        |                                   |         /-----Sir Roger MORTIMER, Earl Of March
|        |                                   |        |         \-----Margaret FIENNES
|        |                                    \-----Katherine MORTIMER
|        |                                            |         /-----Sir Piers De GENEVILLE, Baron Of Trim
|        |                                             \-----Joan De GENEVILLE, Countess Of March
|        |                                                      \-----Joan De LUSIGNAN
 \-----Cicely De WELLES
         |                                                      /-----John WATERTON
         |                                             /-----John WATERTON
         |                                            |         \-----Matilda AMYAS
         |                                    /-----John WATERTON
         |                                   |        |         /-----Jordan RAINEVILLE
         |                                   |         \-----Aubrey RAINEVILLE
         |                           /-----Richard WATERTON
         |                          |        |         /-----Thomas De BURGH
         |                          |         \-----Catherine De BURGH
         |                  /-----Robert WATERTON
         |                 |        |         /-----Sir William ASSENHULL
         |                 |         \-----Constance ASSENHULL
         |                 |                 |         /-----John De BURGH
         |                 |                  \-----Joan De BURGH
         |         /-----Robert De WATERTON
          \-----Joan De WATERTON
                  |                  /-----John FLEMING
                  |         /-----Sir Robert FLEMING
                  |        |         \-----Alice
                   \-----Cecily FLEMING
                            \-----Margery



Descendants of Robert De WILLOUGHBY
1. Robert De WILLOUGHBY