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Family:
Bibliography
  1. Paget, Gerald, The Lineage and Ancestry of H.R.H. Prince Charles, Prince of Wales. London: Charles Skilton Ltd, 1977. Nypl ARF+ 78-835. Information from this source tagged as [Ref: Paget HRHCharles p[0-9]*].
  2. 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 v3p[0-9]*].

Sources for birth and parent Information
father:
illeg son [Ref: Richardson RoyalAnc v3p504]
illeg son of Thomas Duke of Clarence [Ref: Paget HRHCharles p27]
Sources for death Information
date:
living 20 Mar 1431 [Ref: Richardson RoyalAnc v3p505]
Research Notes:
Knt, of Esker, Newcastle-Lyons, Cromelyn, and Tassagard, Co Dublin, Ireland [Ref: Richardson RoyalAnc v3p504]

styled "Bastard of Clarence" [Ref: Richardson RoyalAnc v3p505]

King's Knight [Ref: Richardson RoyalAnc v3p505]

Constable of Dublin Castle [Ref: Richardson RoyalAnc v3p505]



Pedigree of Sir John Of Clarence
                                                                /-----John Lackland PLANTAGENET, King Of England
                                                       /-----Henry III King Of England
                                                      |         \-----Isabel Of Angouleme
                                              /-----Edward I King Of England
                                             |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
                                             |         \-----Eleanor Of Provence
                                             |                  \-----Beatrice Of Savoy
                                     /-----Edward II King Of England
                                    |        |                  /-----Alfonso IX King Of Leon
                                    |        |         /-----Fernando III The Saint King Of Castile And Leon
                                    |        |        |         \-----Berengaria Of Castile
                                    |         \-----Eleanor Of Castile
                                    |                 |         /-----Simon De DAMMARTIN, Count Of Aumale
                                    |                  \-----Joan De DAMMARTIN
                                    |                           \-----Marie Countess Of Ponthieu
                            /-----Edward III King Of England
                           |        |                           /-----Saint Louis IX King Of France
                           |        |                  /-----Phillip III The Bold King Of France
                           |        |                 |         \-----Marguerite Of Provence
                           |        |         /-----Phillip IV King Of France
                           |        |        |        |         /-----James I The Conqueror King Of Aragon
                           |        |        |         \-----Isabelle Of Aragon
                           |        |        |                  \-----Iolande Of Hungary
                           |         \-----Isabella Of France
                           |                 |                  /-----Theobald I King Of Navarre
                           |                 |         /-----Henry I King Of Navarre
                           |                 |        |         \-----Margaret Of Bourbon
                           |                  \-----Jeanne Of Navarre, Countess Of Champagne
                           |                          |         /-----Robert Count Of Artois
                           |                           \-----Blanche Of Artois
                           |                                    \-----Matilda Of Brabant
                   /-----John Of Gaunt K.G., Duke of Lancaster
                  |        |                                    /-----Richard Seigneur Of Avesnes
                  |        |                           /-----John I De AVENES, Count Of Hainault
                  |        |                          |         \-----Margaret Of Flanders
                  |        |                  /-----John II Count Of Hainault, Count Of Holland
                  |        |                 |        |         /-----Florence IV Count Of Holland
                  |        |                 |         \-----Adelaide Of Holland
                  |        |                 |                  \-----Matilda Of Brabant
                  |        |         /-----William III Count Of Hainault And Holland
                  |        |        |        |                  /-----Waleran IV Duke Of Limburg
                  |        |        |        |         /-----Henry II The Blond Count Of Luxembourg And La Roche
                  |        |        |        |        |         \-----Ermensende Of Namur
                  |        |        |         \-----Philippa Of Luxembourg
                  |        |        |                 |         /-----Henry II Count Of Bar, Seigneur De Ligny
                  |        |        |                  \-----Margaret Of Bar
                  |        |        |                           \-----Phillippe Of Dreux
                  |         \-----Philippa Of Hainault
                  |                 |                           /-----Saint Louis IX King Of France
                  |                 |                  /-----Phillip III The Bold King Of France
                  |                 |                 |         \-----Marguerite Of Provence
                  |                 |         /-----Charles Count Of Valois And Anjou
                  |                 |        |        |         /-----James I The Conqueror King Of Aragon
                  |                 |        |         \-----Isabelle Of Aragon
                  |                 |        |                  \-----Iolande Of Hungary
                  |                  \-----Joanna Of Valois
                  |                          |                  /-----Charles Of Anjou, Count Of Provence
                  |                          |         /-----Charles II The Lame King Of Naples
                  |                          |        |         \-----Beatrix Countess Of Provence
                  |                           \-----Margaret Of Naples
                  |                                   |         /-----Stephen V King Of Hungary
                  |                                    \-----Mary Of Hungary
                  |                                             \-----Elizabeth Of Cumans
          /-----Henry IV King Of England
         |        |                                             /-----John Lackland PLANTAGENET, King Of England
         |        |                                    /-----Henry III King Of England
         |        |                                   |         \-----Isabel Of Angouleme
         |        |                           /-----Edmund Crouchback PLANTAGENET, King Of Sicily
         |        |                          |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
         |        |                          |         \-----Eleanor Of Provence
         |        |                          |                  \-----Beatrice Of Savoy
         |        |                  /-----Henry PLANTAGENET, Earl Of Lancaster
         |        |                 |        |                  /-----Louis VIII The Lion King Of France
         |        |                 |        |         /-----Robert Count Of Artois
         |        |                 |        |        |         \-----Blanche Of Castile
         |        |                 |         \-----Blanche Of Artois
         |        |                 |                 |         /-----Henry II The Conqueror Duke Of Brabant
         |        |                 |                  \-----Matilda Of Brabant
         |        |                 |                           \-----Marie Of Swabia
         |        |         /-----Henry PLANTGENET, K.G., Duke of Lancaster
         |        |        |        |                           /-----Pain De CHAWORTH, Baron Of Kempsford
         |        |        |        |                  /-----Patric De CHAWORTH, Baron Of Kempsford
         |        |        |        |                 |         \-----Gundreda De La FERTE
         |        |        |        |         /-----Sir Patric CHAWORTH, Baron Of Kempsford
         |        |        |        |        |        |         /-----Thomas De LONDRES, Lord Of Kidwelly
         |        |        |        |        |         \-----Hawise De LONDRES
         |        |        |        |        |                  \-----Eve FITZ WARIN
         |        |        |         \-----Maud CHAWORTH
         |        |        |                 |                  /-----William BEAUCHAMP, Baron Of Elmsley Castle
         |        |        |                 |         /-----William De BEAUCHAMP, Earl Of Warwick
         |        |        |                 |        |         \-----Isabel MAUDUIT
         |        |        |                  \-----Isabel De BEAUCHAMP
         |        |        |                          |         /-----Sir John FITZ GEOFFREY
         |        |        |                           \-----Maud FITZJOHN
         |        |        |                                    \-----Isabel BIGOD
         |         \-----Blanche Of Lancaster
         |                 |                                    /-----Erard II Count Of Brienne
         |                 |                           /-----Jean De BRIENNE, King Of Jerusalem
         |                 |                          |         \-----Agnes De MONTFAUCON
         |                 |                  /-----Louis De BRIENNE, Viscount Of Beaumont In Main
         |                 |                 |        |         /-----Alfonso IX King Of Leon
         |                 |                 |         \-----Berengaria Of Leon
         |                 |                 |                  \-----Berengaria Of Castile
         |                 |         /-----Henry De BEAUMONT, Earl Of Buchan
         |                 |        |        |                  /-----Richard I De BEAUMONT, Viscount Of Maine
         |                 |        |        |         /-----Raoul De BEAUMONT, Vicomte of Beaumont
         |                 |        |        |        |         \-----Lucie De L'AIGLE
         |                 |        |         \-----Agnes De BEAUMONT
         |                 |        |                  \-----Agnes
         |                  \-----Isabel BEAUMONT
         |                          |                           /-----William COMYN, Earl Of Buchan
         |                          |                  /-----Alexander COMYN, Earl Of Buchan
         |                          |                 |         \-----Margaret Countess Of Buchan
         |                          |         /-----Sir Alexander COMYN
         |                          |        |        |         /-----Roger De QUINCY, Earl Of Winchester
         |                          |        |         \-----Elizabeth De QUINCY
         |                          |        |                  \-----Helen Of Galloway
         |                           \-----Alice COMYN
         |                                   |                  /-----William De LATIMER
         |                                   |         /-----William Le LATIMER, Lord Latimer
         |                                    \-----Joanna LATIMER
         |                                            |         /-----Walter LEDET
         |                                             \-----Alice LEDET
         |                                                      \-----Ermentrude De LISLE
 /-----Thomas PLANTAGENET, K.G., Duke Of Clarence
|        |                                                      /-----Humphrey V De BOHUN, Earl Of Hereford And Essex
|        |                                             /-----Humphrey VI De BOHUN
|        |                                            |         \-----Maud D'EU
|        |                                    /-----Humphrey VII De BOHUN, Earl Of Hereford And Essex
|        |                                   |        |         /-----William De BRAIOSE, Baron Of Brecknock Castle
|        |                                   |         \-----Eleanor De BRAIOSE
|        |                                   |                  \-----Eve MARSHALL
|        |                           /-----Humphrey VIII De BOHUN, Earl Of Hereford And Essex
|        |                          |        |                  /-----William De FIENNES
|        |                          |        |         /-----Sir Ingleman FIENNES, K.B., Lord Of Wendover
|        |                          |        |        |         \-----Agnes De DAMMARTIN
|        |                          |         \-----Maud De FIENNES
|        |                          |                  \-----Isabel
|        |                  /-----Sir William De BOHUN, K.G., Earl of Northampton
|        |                 |        |                           /-----John Lackland PLANTAGENET, King Of England
|        |                 |        |                  /-----Henry III King Of England
|        |                 |        |                 |         \-----Isabel Of Angouleme
|        |                 |        |         /-----Edward I King Of England
|        |                 |        |        |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
|        |                 |        |        |         \-----Eleanor Of Provence
|        |                 |        |        |                  \-----Beatrice Of Savoy
|        |                 |         \-----Elizabeth PLANTAGENET
|        |                 |                 |                  /-----Alfonso IX King Of Leon
|        |                 |                 |         /-----Fernando III The Saint King Of Castile And Leon
|        |                 |                 |        |         \-----Berengaria Of Castile
|        |                 |                  \-----Eleanor Of Castile
|        |                 |                          |         /-----Simon De DAMMARTIN, Count Of Aumale
|        |                 |                           \-----Joan De DAMMARTIN
|        |                 |                                    \-----Marie Countess Of Ponthieu
|        |         /-----Humphrey IX De BOHUN, K.G., Earl Of Hereford
|        |        |        |                           /-----Giles BADLESMERE
|        |        |        |                  /-----Guncelin BADLESMERE
|        |        |        |         /-----Bartholomew De BADLESMERE, Lord Badlesmere
|        |        |         \-----Elizabeth De BADLESMERE
|        |        |                 |                           /-----Sir Gilbert De CLARE, Earl Of Hertford And Glouceste
|        |        |                 |                  /-----Richard De CLARE, Earl Of Gloucester And Hertfor
|        |        |                 |                 |         \-----Isabel MARSHALL
|        |        |                 |         /-----Thomas DeCLARE, Lord Of Thomond
|        |        |                 |        |        |         /-----John De LACY, Earl Of Lincoln, MC Surety
|        |        |                 |        |         \-----Maud De LACY
|        |        |                 |        |                  \-----Margaret De QUINCY, Heiress Of Lincoln
|        |        |                  \-----Margaret De CLARE
|        |        |                          |                  /-----Sir Maurice FITZ GERALD, Baron Offaly
|        |        |                          |         /-----Maurice FITZ MAURICE FITZ GERALD, Lord Of Offaly
|        |        |                          |        |         \-----Juliane
|        |        |                           \-----Julian FITZ MAURICE
|        |        |                                   |         /-----Gerald De PRENDERGAST
|        |        |                                    \-----Matilda De PRENDERGAST
|        |        |                                             \-----Matilda De BURG
|         \-----Mary De BOHUN
|                 |                                             /-----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
|                 |         /-----Sir Richard FITZ ALAN, Earl Of Arundel And Surrey
|                 |        |        |                           /-----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
|                  \-----Joan FITZALAN
|                          |                                    /-----John Lackland PLANTAGENET, King Of England
|                          |                           /-----Henry III King Of England
|                          |                          |         \-----Isabel Of Angouleme
|                          |                  /-----Edmund Crouchback PLANTAGENET, King Of Sicily
|                          |                 |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
|                          |                 |         \-----Eleanor Of Provence
|                          |                 |                  \-----Beatrice Of Savoy
|                          |         /-----Henry PLANTAGENET, Earl Of Lancaster
|                          |        |        |                  /-----Louis VIII The Lion King Of France
|                          |        |        |         /-----Robert Count Of Artois
|                          |        |        |        |         \-----Blanche Of Castile
|                          |        |         \-----Blanche Of Artois
|                          |        |                 |         /-----Henry II The Conqueror Duke Of Brabant
|                          |        |                  \-----Matilda Of Brabant
|                          |        |                           \-----Marie Of Swabia
|                           \-----Eleanor PLANTAGENET
|                                   |                           /-----Pain De CHAWORTH, Baron Of Kempsford
|                                   |                  /-----Patric De CHAWORTH, Baron Of Kempsford
|                                   |                 |         \-----Gundreda De La FERTE
|                                   |         /-----Sir Patric CHAWORTH, Baron Of Kempsford
|                                   |        |        |         /-----Thomas De LONDRES, Lord Of Kidwelly
|                                   |        |         \-----Hawise De LONDRES
|                                   |        |                  \-----Eve FITZ WARIN
|                                    \-----Maud CHAWORTH
|                                            |                  /-----William BEAUCHAMP, Baron Of Elmsley Castle
|                                            |         /-----William De BEAUCHAMP, Earl Of Warwick
|                                            |        |         \-----Isabel MAUDUIT
|                                             \-----Isabel De BEAUCHAMP
|                                                     |         /-----Sir John FITZ GEOFFREY
|                                                      \-----Maud FITZJOHN
|                                                               \-----Isabel BIGOD
Sir John Of Clarence



Descendants of Sir John Of Clarence
1. Sir John Of Clarence