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Family:
Marriage:
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. 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]*].
  3. Schwennicke, Detlev, ed., Europaische Stammtafeln: Stammtafeln zur Geschichte der europaischen Staaten, New Series. III.4 (#601-#820): Das Feudale Frankreich und sein Einfluss auf die Welt des Mittelalters. Marburg: Verlag von J. A. Stargardt, 1989. Information from this source tagged as [Ref: ES III.4 #[0-9]*].
  4. Richardson, Douglas, Plantagenet Ancestry: A Study in Colonial and Medieval Families. Baltimore, MD: Genelogical Publishing Co, 2004. Information from this source tagged as [Ref: Richardson PA p[0-9]*].
  5. 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 v2p[0-9]*].

Sources for birth and parent Information
parents:
[Ref: CP V p77, Richardson PA p239, Richardson RoyalAnc v2p326, Richardson RoyalAnc v2p506],
father:
[Ref: Clutterbuck Hertford v3p178]
Sources for death Information
date:
[Ref: CP V p78, ES III.4 #630, Richardson RoyalAnc v2p506]
Sources with Information about marriage to Sir Thomas ENGAINE, Lord Engaine
date:
before 18 Oct 1353 [Ref: CP V p77, Richardson RoyalAnc v2p506]
prob being negotiated in Dec 1351 [Ref: CP V p77(e)],
names:
[Ref: Clutterbuck Hertford v3p178, Richardson PA p239, Richardson RoyalAnc v2p331]
Research Notes:
1361: legatee in will of her uncle, Humphrey de Bohun, Earl of Hereford and Essex [Ref: Richardson RoyalAnc v2p506]

1391: legatee in will of her mother [Ref: Richardson RoyalAnc v2p506]

1396: legatee in will of her brother William Courtenay, Archbishop of Canterbury; inherited certain books, stuffs, and plate [Ref: Richardson RoyalAnc v2p506]



Pedigree of Katherine De COURTENAY
                                                       /-----Renaud De COURTENAY
                                              /-----Reginald De COURTENAY
                                             |         \-----(Unk)
                                     /-----Sir Robert De COURTENAY, Baron Of Oakhampton
                                    |        |         /-----William De COURCY
                                    |         \-----Hawise De COURCY
                                    |                 |         /-----Robert D'AVRANCHES, Lord Of Oakhampton
                                    |                  \-----Maud D'AVRANCHES, Lady Du Sap In Normandy
                                    |                           \-----Hawise Of Dol
                            /-----Sir John De COURTENAY, Baron Of Oakhampton
                           |        |                           /-----Richard De REVIERS, Seigneur Of Reviers, Vernon,
                           |        |                  /-----Baldwin De REVIERS, Earl Of Devon
                           |        |                 |         \-----Adelise PEVEREL
                           |        |         /-----William De REVIERS, Earl Of Devon
                           |        |        |        |         /-----Nigel
                           |        |        |         \-----Adelise
                           |        |        |                  \-----(Unk Dau) De TOTNES
                           |         \-----Mary De VERNON
                           |                 |                  /-----Waleran De BEAUMONT, Earl Of Worcester
                           |                 |         /-----Sir Robert De DUNSTANVILLE, Count De Meulan
                           |                 |        |         \-----Agnes De MONTFORT
                           |                  \-----Maud De BEAUMONT
                           |                          |         /-----Reginald De DUNSTANVILLE, Earl Of Cornwall
                           |                           \-----Maud FITZ ROY
                           |                                    \-----Mabel
                   /-----Sir Hugh De COURTENAY, Baron Of Oakhampton
                  |        |                                    /-----Alberic II De VERE, Baron Of Hedingham
                  |        |                           /-----Aubrey III De VERE, Earl Of Oxford
                  |        |                          |         \-----Adeliza De CLARE
                  |        |                  /-----Robert De VERE, Earl Of Oxford, MC Surety
                  |        |                 |        |         /-----Henry Of Essex, Baron Of Rayleigh
                  |        |                 |         \-----Agnes Lucia Of Essex
                  |        |                 |                  \-----Cicely De VALOGNES
                  |        |         /-----Sir Hugh De VERE, Earl Of Oxford
                  |        |        |        |                  /-----Walter I De BOLBEC, Baron Of Styford
                  |        |        |        |         /-----Hugh De BOLEBEC, Baron Of Whitchurch
                  |        |        |        |        |         \-----Helewise
                  |        |        |         \-----Isabel De BOLEBEC
                  |         \-----Isabel De VERE
                  |                 |                           /-----Saher De QUINCEY, Lord Of Buckby In Northampto
                  |                 |                  /-----Robert De QUINCEY
                  |                 |                 |         \-----Maud De ST LIZ
                  |                 |         /-----Saire De QUINCEY, Earl Of Winchester, MC Suret
                  |                 |        |        |         /-----Ness Of Leuchars
                  |                 |        |         \-----Orabella
                  |                  \-----Hawise De QUINCEY
                  |                          |                  /-----Sir Robert II De Beaumont, Earl Of Leicester
                  |                          |         /-----Sir Robert De BEAUMONT, Earl Of Leicester
                  |                          |        |         \-----Amicia De Gael
                  |                           \-----Margaret BEAUMONT
                  |                                   |         /-----William De GRANTMESNIL
                  |                                    \-----Petronilla De GRANTMESNIL
          /-----Sir Hugh De COURTENAY, Earl Of Devon
         |        |                                             /-----Ansketil De BERGES
         |        |                                    /-----Geoffrey Le DESPENSER
         |        |                                   |         \-----Rohese
         |        |                           /-----Thomas Le DESPENSER
         |        |                  /-----Sir Hugh Le DESPENSER
         |        |                 |         \-----Recuara
         |        |         /-----Sir Hugh Le DESPENSER, Justiciar Of England
         |         \-----Eleanor Le DESPENSER
         |                 |                                    /-----Gilbert BASSET
         |                 |                           /-----Thomas BASSET
         |                 |                          |         \-----Edith
         |                 |                  /-----Sir Alan BASSET
         |                 |                 |        |         /-----Alan De DUNSTANVILLE
         |                 |                 |         \-----Adeliza De DUNSTANVILLE
         |                 |         /-----Sir Philip BASSET, Justiciar Of England
         |                 |        |        |                  /-----Stephen De GAI
         |                 |        |        |         /-----Phillip De GAI
         |                 |        |        |        |         \-----Aline PIPARD
         |                 |        |         \-----Aline De GAI
         |                 |        |                  \-----Sedzilia
         |                  \-----Aline BASSET
         |                          |                           /-----Godfrey III Count Of Louvain
         |                          |                  /-----Godfrey De LOUVAINE
         |                          |                 |         \-----Imaine Of Loos
         |                          |         /-----Matthew De LOUVAINE, Baron Of Little Easton
         |                          |        |        |         /-----Robert De HASTINGS, Baron Of Little Easton
         |                          |        |         \-----Delicia (Alice) De HASTINGS
         |                          |        |                  \-----Maud De FLAMVILLE
         |                           \-----Hawise De LOUVAINE
         |                                    \-----Muriel (Amy)
 /-----Sir Hugh De COURTENAY, Earl Of Devon
|        |                                                      /-----Henry De PORT, Baron Of Basing
|        |                                             /-----John De PORT, Baron Of Basing
|        |                                            |         \-----Hawise
|        |                                    /-----Adam De PORT, Baron Of Basing
|        |                                   |         \-----Maud
|        |                           /-----William De St JOHN, Baron Of Basing
|        |                          |        |                  /-----Hugh De ORVAL
|        |                          |        |         /-----Rainald De ORVAL
|        |                          |         \-----Mabel De ORVAL
|        |                          |                 |         /-----Roger De St JOHN
|        |                          |                  \-----Muriel De St JOHN
|        |                          |                           \-----Cecily De La HAIE
|        |                  /-----Sir Robert De St JOHN, Baron Of Basing
|        |                 |        |                           /-----Roger III De TOENI, Baron Of Flamstead
|        |                 |        |                  /-----Ralph V De TOENI, Baron Of Flamstead
|        |                 |        |                 |         \-----Ida (Gertrude) Of Hainault
|        |                 |        |         /-----Roger IV De TOENI, Baron Of Flamstead
|        |                 |        |        |        |         /-----Sir Robert II De Beaumont, Earl Of Leicester
|        |                 |        |        |         \-----Margaret De BEAUMONT
|        |                 |        |        |                  \-----Amicia De Gael
|        |                 |         \-----Godeheut
|        |                 |                 |                  /-----Roscelin De BEAUMONT, Viscount Of Maine
|        |                 |                 |         /-----Richard I De BEAUMONT, Viscount Of Maine
|        |                 |                 |        |         \-----Constance
|        |                 |                  \-----Constance De BEAUMONT
|        |                 |                          |         /-----Richard II Seigneur of l'Aigle
|        |                 |                           \-----Lucie De L'AIGLE
|        |                 |                                    \-----Beatrice
|        |         /-----Sir John De St JOHN, Baron Of Basing
|        |        |        |                                    /-----William De CANTELU
|        |        |        |                           /-----Walter De CANTELOU
|        |        |        |                  /-----Sir William De CANTELOU, Baron Of Eaton Bray
|        |        |        |                 |         \-----Amice
|        |        |        |         /-----Sir William De CANTELOU, Baron Of Eaton Bray
|        |        |        |        |        |                  /-----Audulf De BRACI
|        |        |        |        |        |         /-----Audulf De BRACI
|        |        |        |        |         \-----Mesceline De BRACI
|        |        |         \-----Agnes De CAUNTELO
|        |        |                 |                           /-----Hugh De GOURNAY
|        |        |                 |                  /-----Hugh De GOURNAY
|        |        |                 |                 |         \-----Beatrice Of Vermandois
|        |        |                 |         /-----Hugh De GOURNAY
|        |        |                 |        |        |         /-----Thomas De COUCY, Count Of Anvers
|        |        |                 |        |         \-----Melisende De COUCY
|        |        |                 |        |                  \-----Melisende De CRECY En LAONNOIS
|        |        |                  \-----Millicent De GOURNAY
|        |        |                          |                  /-----Alberic I De DAMMARTIN
|        |        |                          |         /-----Alberic II De DAMMARTIN, Count Of Dammartin
|        |        |                          |        |         \-----(Unk)
|        |        |                           \-----Julia De DAMMARTIN
|        |        |                                   |         /-----Renaud Count Of Clermont
|        |        |                                    \-----Maud Of Clermont
|        |        |                                             \-----Clemence Of Bar-Le-Duc
|         \-----Agnes De St JOHN
|                 |                                             /-----Herbert Of Winchester, Chamberlain And Treasure
|                 |                                    /-----Herbert FITZ HERBERT
|                 |                                   |         \-----(Unk)
|                 |                           /-----Herbert FITZ HERBERT
|                 |                          |        |         /-----Robert CORBET, Lord of Alcester
|                 |                          |         \-----Sibyl CORBET
|                 |                  /-----Piers FITZ HERBERT
|                 |                 |        |                  /-----Walter FITZ ROGER
|                 |                 |        |         /-----Miles FITZ WALTER, Earl Of Hereford
|                 |                 |        |        |         \-----Berthe De BALLON
|                 |                 |         \-----Lucy Of Hereford
|                 |                 |                 |         /-----Bernard De NEUFMARCHE, Lord Of Brecon
|                 |                 |                  \-----Sibyl De NEUFMARCHE
|                 |                 |                           \-----Nesta
|                 |         /-----Sir Reynold FITZ PIERS
|                 |        |        |                           /-----Richard
|                 |        |        |                  /-----Roger FITZ RICHARD, Baron Of Warkworth
|                 |        |        |                 |         \-----Jane BIGOD
|                 |        |        |         /-----Robert FITZ ROGER, Baron Of Whalton
|                 |        |        |        |        |         /-----Alberic II De VERE, Baron Of Hedingham
|                 |        |        |        |         \-----Alice De VERE
|                 |        |        |        |                  \-----Adeliza De CLARE
|                 |        |         \-----Alice De WARKWORTH
|                 |        |                 |                  /-----Robert FITZWALTER
|                 |        |                 |         /-----William De CHESNEY
|                 |        |                 |        |         \-----Sibyl Of Rudham
|                 |        |                  \-----Margery De CHESNEY, Lady Of Horsford
|                 |        |                          |         /-----Baldwin Fitz GUY
|                 |        |                           \-----Gilla
|                  \-----Alice FITZ REYNOLD
|                          |         /-----William STANFORD
|                           \-----Alice STANFORD
Katherine De COURTENAY
|                                                               /-----Humphrey III De BOHUN, Baron Of Trowbridge
|                                                      /-----Humphrey IV De BOHUN, Baron Of Trowbridge
|                                                     |         \-----Margaret Of Hereford
|                                             /-----Henry De BOHUN, Earl Of Hereford, MC Surety
|                                            |        |         /-----Henry Of Huntingdon, Earl Of Huntingdon
|                                            |         \-----Margaret Of Huntingdon
|                                            |                  \-----Ada De WARENNE
|                                    /-----Humphrey V De BOHUN, Earl Of Hereford And Essex
|                                   |        |                  /-----Piers De LUTEGARESHALE
|                                   |        |         /-----Geoffrey FITZ PIERS, Earl Of Essex
|                                   |        |        |         \-----Maud
|                                   |         \-----Maud FITZ GEOFFREY De MANDEVILLE
|                                   |                 |         /-----William De SAY
|                                   |                  \-----Beatrice De SAY
|                                   |                           \-----Aufrica
|                           /-----Humphrey VI De BOHUN
|                          |        |                           /-----Hugh VIII Sire De Lusignan
|                          |        |                  /-----Hugh Sire De Lusignan
|                          |        |                 |         \-----Burgundia Dame De Fontenay
|                          |        |         /-----Raoul I De LUSIGNAN, Count D'Eu
|                          |        |        |         \-----Orengarde
|                          |         \-----Maud D'EU
|                          |                 |                  /-----John Count D'Eu, Baron Of Hastings
|                          |                 |         /-----Henry Count D'Eu, Baron Of Hastings
|                          |                 |        |         \-----Adelise D'AUBIGNY
|                          |                  \-----Alice D'EU, Countess Of Eu, Lady Of Hastings
|                          |                          |         /-----Hameline PLANTAGENET, Earl Of Surrey
|                          |                           \-----Maud De WARENNE
|                          |                                    \-----Isabel De WARENNE, Countess Of Surrey
|                  /-----Humphrey VII De BOHUN, Earl Of Hereford And Essex
|                 |        |                                    /-----William De BRAOS, Baron Of Bramber
|                 |        |                           /-----William De BRAOS, Baron Of Bramber
|                 |        |                          |         \-----Bertha Of Hereford
|                 |        |                  /-----Reginald De BRAOS, Baron Of Bramber
|                 |        |                 |        |         /-----Bernard De St VALERY, Baron Of Beckley
|                 |        |                 |         \-----Matilda De ST VALERIE De HAIA
|                 |        |                 |                  \-----Matilda
|                 |        |         /-----William De BRAIOSE, Baron Of Brecknock Castle
|                 |        |        |        |                  /-----Thomas De BRIWERE
|                 |        |        |        |         /-----Sir William De BRIWERE, Baron Of Horsley
|                 |        |        |        |        |         \-----(Unk) De ALBEMARLE
|                 |        |        |         \-----Gracia De BRIWERE
|                 |        |        |                 |         /-----Hubert De VAUX, Baron Of Irthington
|                 |        |        |                  \-----Beatrice De VALLE
|                 |        |        |                           \-----Grecia
|                 |         \-----Eleanor De BRAIOSE
|                 |                 |                           /-----Gilbert GIFFARD, Marshal
|                 |                 |                  /-----John Fitz GILBERT The Marshal
|                 |                 |                 |         \-----(Unk dau) De VENOIZ
|                 |                 |         /-----Sir William MARSHALL, Protector, Earl Of Pembroke
|                 |                 |        |        |         /-----Walter De SALISBURY, Baron Of Chitterne
|                 |                 |        |         \-----Sibyl De SALISBURY
|                 |                 |        |                  \-----Sibyl De CHAWORTH
|                 |                  \-----Eve MARSHALL
|                 |                          |                  /-----Gilbert De CLARE, Earl Of Pembroke
|                 |                          |         /-----Richard "Strongbow" De CLARE, Earl Of Pembroke
|                 |                          |        |         \-----Elizabeth De BEAUMONT
|                 |                           \-----Isabel De CLARE, Countess Of Pembroke
|                 |                                   |         /-----Dairmait Mac MURCHAD, King Of Leinster
|                 |                                    \-----Aoife Macmurchada Of Leinster
|                 |                                             \-----Mor Ua TUATHAIL
|         /-----Humphrey VIII De BOHUN, Earl Of Hereford And Essex
|        |        |                                             /-----Conan Fitz EUSTACHE
|        |        |                                    /-----Eustace II De FIENNES, Baron Fiennes
|        |        |                                   |         \-----Gila
|        |        |                           /-----Ingleman De FIENNES
|        |        |                          |        |         /-----Arnold Of Gent, Count Of Guines
|        |        |                          |         \-----Margaret Of Guines
|        |        |                          |                  \-----Mahaut De SAINT OMER
|        |        |                  /-----William De FIENNES
|        |        |                 |        |                  /-----William De BOULOGNE
|        |        |                 |        |         /-----Faramus De BOULOGNE
|        |        |                 |        |        |         \-----(Unk1)
|        |        |                 |         \-----Sybilla De BOULOGNE
|        |        |                 |                  \-----Matilda
|        |        |         /-----Sir Ingleman FIENNES, K.B., Lord Of Wendover
|        |        |        |        |                           /-----Odo De DAMMARTIN
|        |        |        |        |                  /-----Alberic I De DAMMARTIN
|        |        |        |        |                 |         \-----Basilia De St CLAIR
|        |        |        |        |         /-----Alberic II De DAMMARTIN, Count Of Dammartin
|        |        |        |        |        |         \-----(Unk)
|        |        |        |         \-----Agnes De DAMMARTIN
|        |        |        |                 |                  /-----Hugh Count Of Clermont
|        |        |        |                 |         /-----Renaud Count Of Clermont
|        |        |        |                 |        |         \-----Margaret De Roucy
|        |        |        |                  \-----Maud Of Clermont
|        |        |        |                          |         /-----Renaud I Count Of Bar
|        |        |        |                           \-----Clemence Of Bar-Le-Duc
|        |        |        |                                    \-----Gisele De VAUDEMONT
|        |         \-----Maud De FIENNES
|        |                  \-----Isabel
 \-----Margaret De BOHUN
         |                                                      /-----Fulk V The Young Count Of Anjou, King Of Jerusalem
         |                                             /-----Geoffrey Plantagenet Count Of Anjou, Duke Of Normandy
         |                                            |         \-----Erembourg Of Maine
         |                                    /-----Henry II Curt Mantel PLANTAGENET, King Of England
         |                                   |        |         /-----Henry I Beauclerc King Of England
         |                                   |         \-----Matilda
         |                                   |                  \-----Matilda Of Scotland
         |                           /-----John Lackland PLANTAGENET, King Of England
         |                          |        |                  /-----William VII Count Of Poitou, IX Duke Of Aquitain
         |                          |        |         /-----William VIII Count Of Poitou, Duke Of Aquitaine
         |                          |        |        |         \-----Maud Of Toulouse
         |                          |         \-----Eleanor Duchess Of Aquitaine
         |                          |                 |         /-----Aimery I Vicount De Chatellerault
         |                          |                  \-----Eleanor De CHASTELLERAULT
         |                          |                           \-----Dangerose
         |                  /-----Henry III King Of England
         |                 |        |                           /-----Wulgrim II Tailefer, Count Of Angouleme
         |                 |        |                  /-----William Guillaume IV Tailefer, Count Of Angouleme
         |                 |        |                 |         \-----Ponse De Montgomery
         |                 |        |         /-----Aymer Tailefer, Count Of Angouleme
         |                 |        |        |        |         /-----Raymond I Vicount Of Turenne
         |                 |        |        |         \-----Marguerite De Turenne
         |                 |        |        |                  \-----Maude De Perche
         |                 |         \-----Isabel Of Angouleme
         |                 |                 |                  /-----Louis VI The Fat King Of France
         |                 |                 |         /-----Peter Of France, Lord Of Courteney
         |                 |                 |        |         \-----Adelaide Of Savoy
         |                 |                  \-----Alice De Courtenay
         |                 |                          |         /-----Renaud De Courtenay, Seigneur De Courtenay
         |                 |                           \-----Elizabeth De Courtenay
         |                 |                                    \-----Hedwig Du DONJON
         |         /-----Edward I King Of England
         |        |        |                                    /-----Raymond Berenger IV Count Of Barcelona
         |        |        |                           /-----Alfonso II King Of Aragon
         |        |        |                          |         \-----Petronilla Queen Of Aragon
         |        |        |                  /-----Alfonso II Count Of Provence
         |        |        |                 |        |         /-----Alfonso VII King Of Castile And Leon
         |        |        |                 |         \-----Sancha Of Castile
         |        |        |                 |                  \-----Richilde Of Poland
         |        |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
         |        |        |        |        |                  /-----Rostaing II De Sabran
         |        |        |        |        |         /-----Rainou Seigneur De Castellar, Count Of Forcalqu
         |        |        |        |        |        |         \-----Roscie Of Uzes
         |        |        |        |         \-----Gersenda II Of Sabran
         |        |        |        |                 |         /-----William II Count Of Forcalquier
         |        |        |        |                  \-----Gersinde Of Forcalquier
         |        |        |        |                           \-----Adelaida De Bezieres
         |        |         \-----Eleanor Of Provence
         |        |                 |                           /-----Amadeus III Count Of Savoy, Marquess Of Turin
         |        |                 |                  /-----Humbert III Count Of Savoy
         |        |                 |                 |         \-----Matilda Of Grenoble
         |        |                 |         /-----Thomas I Count Of Savoy
         |        |                 |        |        |         /-----Gerard I Count Of Vienne And Macon
         |        |                 |        |         \-----Beatrix Of Macon
         |        |                 |        |                  \-----Maurette Of Salines
         |        |                  \-----Beatrice Of Savoy
         |        |                          |                  /-----Amadeus Count Of Geneva
         |        |                          |         /-----William I Count Of Geneva
         |        |                          |        |         \-----Matilda
         |        |                           \-----Margaret Of Geneva
         |        |                                   |         /-----Aimon I Sire Of Faucigny
         |        |                                    \-----Beatrix De FAUCIGNY
         |        |                                             \-----Clementia
          \-----Elizabeth PLANTAGENET
                  |                                             /-----Raymond Of Burgandy, Count Of Castille
                  |                                    /-----Alfonso VII King Of Castile And Leon
                  |                                   |         \-----Urraca Queen Of Castile And Leon
                  |                           /-----Fernando II King Of Leon
                  |                          |        |         /-----Raymond Berenger III Count Of Barcelona
                  |                          |         \-----Berenguela Of Barcelona
                  |                          |                  \-----Aldonza De CARLAT
                  |                  /-----Alfonso IX King Of Leon
                  |                 |        |                  /-----Henry I Count Of Portugal
                  |                 |        |         /-----Alfonso Henriques I King Of Portugal
                  |                 |        |        |         \-----Theresa Of Castile
                  |                 |         \-----Urraca Of Portugal
                  |                 |                 |         /-----Amadeus III Count Of Savoy, Marquess Of Turin
                  |                 |                  \-----Maud Of Savoy
                  |                 |                           \-----Matilda Of Grenoble
                  |         /-----Fernando III The Saint King Of Castile And Leon
                  |        |        |                           /-----Alfonso VII King Of Castile And Leon
                  |        |        |                  /-----Sancho III King Of Castile
                  |        |        |                 |         \-----Berenguela Of Barcelona
                  |        |        |         /-----Alfonso VIII The Good King Of Castile
                  |        |        |        |        |         /-----Garcia V King Of Navarre
                  |        |        |        |         \-----Blanche Of Navarre
                  |        |        |        |                  \-----Marguerite Of Perche
                  |        |         \-----Berengaria Of Castile
                  |        |                 |                  /-----Geoffrey Plantagenet Count Of Anjou, Duke Of Normandy
                  |        |                 |         /-----Henry II Curt Mantel PLANTAGENET, King Of England
                  |        |                 |        |         \-----Matilda
                  |        |                  \-----Eleanor Of England
                  |        |                          |         /-----William VIII Count Of Poitou, Duke Of Aquitaine
                  |        |                           \-----Eleanor Duchess Of Aquitaine
                  |        |                                    \-----Eleanor De CHASTELLERAULT
                   \-----Eleanor Of Castile
                           |                                    /-----Odo De DAMMARTIN
                           |                           /-----Alberic I De DAMMARTIN
                           |                          |         \-----Basilia De St CLAIR
                           |                  /-----Alberic II De DAMMARTIN, Count Of Dammartin
                           |                 |         \-----(Unk)
                           |         /-----Simon De DAMMARTIN, Count Of Aumale
                           |        |        |                  /-----Hugh Count Of Clermont
                           |        |        |         /-----Renaud Count Of Clermont
                           |        |        |        |         \-----Margaret De Roucy
                           |        |         \-----Maud Of Clermont
                           |        |                 |         /-----Renaud I Count Of Bar
                           |        |                  \-----Clemence Of Bar-Le-Duc
                           |        |                           \-----Gisele De VAUDEMONT
                            \-----Joan De DAMMARTIN
                                    |                           /-----Guy II De PONTHIEU, Count Of Ponthieu
                                    |                  /-----John I De PONTHIEU, Count Of Ponthieu
                                    |                 |         \-----Ida
                                    |         /-----William III De PONTHIEU, Count Of Ponthieu
                                    |        |        |         /-----Anselme CANDAVAINE, Count Of St. Pol
                                    |        |         \-----Beatrice Of St. Pol
                                     \-----Marie Countess Of Ponthieu
                                             |                  /-----Louis VI The Fat King Of France
                                             |         /-----Louis VII The Young King Of France
                                             |        |         \-----Adelaide Of Savoy
                                              \-----Alice Of France
                                                      |         /-----Alfonso VII King Of Castile And Leon
                                                       \-----Constance Of Castile
                                                                \-----Berenguela Of Barcelona



Descendants of Katherine De COURTENAY
1. Katherine De COURTENAY m. Sir Thomas ENGAINE, Lord Engaine
m. Sir Thomas ENGAINE, Lord Engaine father: Sir John ENGAINE, Lord Engaine mother: Joan PEVEREL