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Bibliography
  1. Verity, Brad, Thomas de Monthermer, son and heir of Ralph de Monthermer. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 7/16/2019. Subject: C.P. Addition: Sir Thomas de Monthermer [died 1340], son and heir of Ralph de Monthermer, sometime Earl of Gloucester & Hertford [died 1325]. Available at https://groups.google.com/g/soc.genealogy.medieval/c/xO-d3160HR8/m/g33-gHcwAwAJ. Author address: royaldescent at hotmail dot com. Information from this source tagged as [Ref: Brad Verity SGM 7/16/2019-005522].
  2. Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 09, Moels-Nugent. London: St Catherine Press, 1936. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP IX [Ap][p0-9].*].
  3. Richardson, Douglas, Thomas de Monthermer, son and heir of Ralph de Monthermer. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 7/14/2019. Subject: C.P. Addition: Sir Thomas de Monthermer [died 1340], son and heir of Ralph de Monthermer, sometime Earl of Gloucester & Hertford [died 1325]. Available at https://groups.google.com/g/soc.genealogy.medieval/c/xO-d3160HR8/m/5aC1z5a_AgAJ. Author address: celticprince at gmail dot com. Information from this source tagged as [Ref: Douglas Richardson SGM 7/14/2019-142652].
  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 v2p[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:
[Ref: Brad Verity SGM 7/16/2019-005522]
younger son [Ref: CP IX p144, Douglas Richardson SGM 7/14/2019-142652, Richardson RoyalAnc v2p206],
parents:
[Ref: Brad Verity SGM 7/16/2019-005522, CP IX p144, Douglas Richardson SGM 7/14/2019-142652]
Sources for death Information
date:
Oct 1339-Feb 1340 [Ref: Sanders Baronies p42]
before 3 Feb 1339/40 [Ref: CP IX p145]
early Dec 1339 [Ref: Richardson RoyalAnc v2p206]
Sources for burial Information
place:
[Ref: Richardson RoyalAnc v2p206]
Research Notes:
1st Lord Monthermer, of Barony cr 1337 [Ref: CP IX p144]

Knt, of Lantyan, Cornwall, Hunton (in Crawley) and Warblington, Hampshore, and Erlestoke, Wiltshire [Ref: Richardson RoyalAnc v2p206]

inherited Barony of Erlestoke from father [Ref: Sanders Baronies p42]

1327: knighted [Ref: Richardson RoyalAnc v2p206]

1337: created Baron Monthermer [Ref: CP IX p144]



Pedigree of Edward De MONTHERMER, Lord Monthermer
 /-----Ralph De MONTHERMER, Lord Monthermer
Edward De MONTHERMER, Lord Monthermer
|                                                               /-----Fulk IV Rechin Count Of Anjou
|                                                      /-----Fulk V The Young Count Of Anjou, King Of Jerusalem
|                                                     |         \-----Bertrade De MONTFORT
|                                             /-----Geoffrey Plantagenet Count Of Anjou, Duke Of Normandy
|                                            |        |         /-----Helias Count Of Maine
|                                            |         \-----Erembourg Of Maine
|                                            |                  \-----Matilda De Chateau-Du-Loir
|                                    /-----Henry II Curt Mantel PLANTAGENET, King Of England
|                                   |        |                  /-----William The Conqueror King Of England
|                                   |        |         /-----Henry I Beauclerc King Of England
|                                   |        |        |         \-----Maud Of Flanders
|                                   |         \-----Matilda
|                                   |                 |         /-----Mael Coluim Ceann Moir (Malcolm III) Canmore Mac DONNCHAD, King Of Scots
|                                   |                  \-----Matilda Of Scotland
|                                   |                           \-----Saint Margaret Of Scotland
|                           /-----John Lackland PLANTAGENET, King Of England
|                          |        |                           /-----William VI Geoffrey Count Of Poitou
|                          |        |                  /-----William VII Count Of Poitou, IX Duke Of Aquitain
|                          |        |                 |         \-----Hildegarde Of Burgundy
|                          |        |         /-----William VIII Count Of Poitou, Duke Of Aquitaine
|                          |        |        |        |         /-----William IV Count Of Toulouse
|                          |        |        |         \-----Maud Of Toulouse
|                          |        |        |                  \-----Emma De MORTAIN
|                          |         \-----Eleanor Duchess Of Aquitaine
|                          |                 |                  /-----Boso II Vicount De Chastellerault
|                          |                 |         /-----Aimery I Vicount De Chatellerault
|                          |                 |        |         \-----Eleanor De THOUARS
|                          |                  \-----Eleanor De CHASTELLERAULT
|                          |                          |         /-----Barthelemy Sire De Isle Bouchard
|                          |                           \-----Dangerose
|                          |                                    \-----Gerberga
|                  /-----Henry III King Of England
|                 |        |                                    /-----Guillaume III Tailefer, Count Of Angouleme
|                 |        |                           /-----Wulgrim II Tailefer, Count Of Angouleme
|                 |        |                          |         \-----Vitapol De Benauges
|                 |        |                  /-----William Guillaume IV Tailefer, Count Of Angouleme
|                 |        |                 |        |         /-----Roger Le POITEVIN, Count Of La Marche
|                 |        |                 |         \-----Ponse De Montgomery
|                 |        |                 |                  \-----Almodis Countess Of La Marche
|                 |        |         /-----Aymer Tailefer, Count Of Angouleme
|                 |        |        |        |                  /-----Boso I Vicount Of Turenne
|                 |        |        |        |         /-----Raymond I Vicount Of Turenne
|                 |        |        |        |        |         \-----Gerberga Comtoresse De Terasson
|                 |        |        |         \-----Marguerite De Turenne
|                 |        |        |                 |         /-----Geoffrey II De Perche, Count Of Perche
|                 |        |        |                  \-----Maude De Perche
|                 |        |        |                           \-----Beatrix De Montdidier
|                 |         \-----Isabel Of Angouleme
|                 |                 |                           /-----Philip I King Of France
|                 |                 |                  /-----Louis VI The Fat King Of France
|                 |                 |                 |         \-----Bertha Of Holland
|                 |                 |         /-----Peter Of France, Lord Of Courteney
|                 |                 |        |        |         /-----Humbert II Count Of Maurienne And Savoy
|                 |                 |        |         \-----Adelaide Of Savoy
|                 |                 |        |                  \-----Gisele Of Burgundy
|                 |                  \-----Alice De Courtenay
|                 |                          |                  /-----Miles Seigneur Of Courtenay
|                 |                          |         /-----Renaud De Courtenay, Seigneur De Courtenay
|                 |                          |        |         \-----Ermengard De Nevers
|                 |                           \-----Elizabeth De Courtenay
|                 |                                   |         /-----Frederick Du DONJON
|                 |                                    \-----Hedwig Du DONJON
|         /-----Edward I King Of England
|        |        |                                             /-----Raymond Berenger III Count Of Barcelona
|        |        |                                    /-----Raymond Berenger IV Count Of Barcelona
|        |        |                                   |         \-----Aldonza De CARLAT
|        |        |                           /-----Alfonso II King Of Aragon
|        |        |                          |        |         /-----Ramirez II King Of Aragon
|        |        |                          |         \-----Petronilla Queen Of Aragon
|        |        |                          |                  \-----Maud/Agnes Of Aquitaine
|        |        |                  /-----Alfonso II Count Of Provence
|        |        |                 |        |                  /-----Raymond Of Burgandy, Count Of Castille
|        |        |                 |        |         /-----Alfonso VII King Of Castile And Leon
|        |        |                 |        |        |         \-----Urraca Queen Of Castile And Leon
|        |        |                 |         \-----Sancha Of Castile
|        |        |                 |                 |         /-----Vladislas II Prince Of Little Poland And Krakow
|        |        |                 |                  \-----Richilde Of Poland
|        |        |                 |                           \-----Agnes De BABENBERG
|        |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
|        |        |        |        |                           /-----William De Sabran
|        |        |        |        |                  /-----Rostaing II De Sabran
|        |        |        |        |                 |         \-----Adalaicia
|        |        |        |        |         /-----Rainou Seigneur De Castellar, Count Of Forcalqu
|        |        |        |        |        |        |         /-----Raimond Of Caylar Seigneur D'Uzes And De Castell
|        |        |        |        |        |         \-----Roscie Of Uzes
|        |        |        |        |        |                  \-----Beatrice Of Uzes
|        |        |        |         \-----Gersenda II Of Sabran
|        |        |        |                 |                  /-----Bertrand I Count Of Forcalquier
|        |        |        |                 |         /-----William II Count Of Forcalquier
|        |        |        |                 |        |         \-----Joscerane
|        |        |        |                  \-----Gersinde Of Forcalquier
|        |        |        |                           \-----Adelaida De Bezieres
|        |         \-----Eleanor Of Provence
|        |                 |                                    /-----Humbert II Count Of Maurienne And Savoy
|        |                 |                           /-----Amadeus III Count Of Savoy, Marquess Of Turin
|        |                 |                          |         \-----Gisele Of Burgundy
|        |                 |                  /-----Humbert III Count Of Savoy
|        |                 |                 |        |         /-----Guigues VIII Count Of Grenoble And Albon
|        |                 |                 |         \-----Matilda Of Grenoble
|        |                 |                 |                  \-----Matilda
|        |                 |         /-----Thomas I Count Of Savoy
|        |                 |        |        |                  /-----William Count Of Vienne And Macon
|        |                 |        |        |         /-----Gerard I Count Of Vienne And Macon
|        |                 |        |        |        |         \-----Pontia Dame De Trever
|        |                 |        |         \-----Beatrix Of Macon
|        |                 |        |                 |         /-----Walter IV Sire De Salines
|        |                 |        |                  \-----Maurette Of Salines
|        |                  \-----Beatrice Of Savoy
|        |                          |                           /-----Aimon I Count Of Geneva
|        |                          |                  /-----Amadeus Count Of Geneva
|        |                          |                 |         \-----Ida
|        |                          |         /-----William I Count Of Geneva
|        |                          |        |        |         /-----Hugues Seigneur De Cuiseaux
|        |                          |        |         \-----Matilda
|        |                          |        |                  \-----Adeline
|        |                           \-----Margaret Of Geneva
|        |                                   |                  /-----Rudolf I Sire Of Faucigny
|        |                                   |         /-----Aimon I Sire Of Faucigny
|        |                                    \-----Beatrix De FAUCIGNY
|        |                                             \-----Clementia
 \-----Joan PLANTAGENET
         |                                                      /-----William I The Great Count Of Burgundy
         |                                             /-----Raymond Of Burgandy, Count Of Castille
         |                                            |         \-----Stephanie Of Barcelona
         |                                    /-----Alfonso VII King Of Castile And Leon
         |                                   |        |         /-----Alfonso VI King Of Castile And Leon
         |                                   |         \-----Urraca Queen Of Castile And Leon
         |                                   |                  \-----Constance Of Burgandy
         |                           /-----Fernando II King Of Leon
         |                          |        |                  /-----Raymond Berenger II Count Of Barcelona
         |                          |        |         /-----Raymond Berenger III Count Of Barcelona
         |                          |        |        |         \-----Matilda De APULIA
         |                          |         \-----Berenguela Of Barcelona
         |                          |                 |         /-----Gilbert De CARLAT, Vicomte De Carlat
         |                          |                  \-----Aldonza De CARLAT
         |                          |                           \-----Gerberga Countess Of Provence
         |                  /-----Alfonso IX King Of Leon
         |                 |        |                           /-----Henry Of Burgundy
         |                 |        |                  /-----Henry I Count Of Portugal
         |                 |        |                 |         \-----(Unk) Of Barcelona
         |                 |        |         /-----Alfonso Henriques I King Of Portugal
         |                 |        |        |        |         /-----Alfonso VI King Of Castile And Leon
         |                 |        |        |         \-----Theresa Of Castile
         |                 |        |        |                  \-----Ximene MUNOS
         |                 |         \-----Urraca Of Portugal
         |                 |                 |                  /-----Humbert II Count Of Maurienne And Savoy
         |                 |                 |         /-----Amadeus III Count Of Savoy, Marquess Of Turin
         |                 |                 |        |         \-----Gisele Of Burgundy
         |                 |                  \-----Maud Of Savoy
         |                 |                          |         /-----Guigues VIII Count Of Grenoble And Albon
         |                 |                           \-----Matilda Of Grenoble
         |                 |                                    \-----Matilda
         |         /-----Fernando III The Saint King Of Castile And Leon
         |        |        |                                    /-----Raymond Of Burgandy, Count Of Castille
         |        |        |                           /-----Alfonso VII King Of Castile And Leon
         |        |        |                          |         \-----Urraca Queen Of Castile And Leon
         |        |        |                  /-----Sancho III King Of Castile
         |        |        |                 |        |         /-----Raymond Berenger III Count Of Barcelona
         |        |        |                 |         \-----Berenguela Of Barcelona
         |        |        |                 |                  \-----Aldonza De CARLAT
         |        |        |         /-----Alfonso VIII The Good King Of Castile
         |        |        |        |        |                  /-----Ramirez II Lord Of Urroz And Moncon
         |        |        |        |        |         /-----Garcia V King Of Navarre
         |        |        |        |        |        |         \-----Christine
         |        |        |        |         \-----Blanche Of Navarre
         |        |        |        |                 |         /-----Gilbert De L'AIGLE, Baron Of Pevensey
         |        |        |        |                  \-----Marguerite Of Perche
         |        |        |        |                           \-----Juliana Of Perch And Montagne
         |        |         \-----Berengaria Of Castile
         |        |                 |                           /-----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
         |        |                  \-----Eleanor 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
          \-----Eleanor Of Castile
                  |                                             /-----Hugh II Count Of Dammartin
                  |                                    /-----Odo De DAMMARTIN
                  |                                   |         \-----Rohais
                  |                           /-----Alberic I De DAMMARTIN
                  |                          |        |         /-----(Unk) De ST CLAIR
                  |                          |         \-----Basilia De St CLAIR
                  |                  /-----Alberic II De DAMMARTIN, Count Of Dammartin
                  |                 |         \-----(Unk)
                  |         /-----Simon De DAMMARTIN, Count Of Aumale
                  |        |        |                           /-----Renaud Count Of Clermont
                  |        |        |                  /-----Hugh Count Of Clermont
                  |        |        |                 |         \-----Ermengardis
                  |        |        |         /-----Renaud Count Of Clermont
                  |        |        |        |        |         /-----Hildouin III De Rameru, Count Of Montdidier And Roucy
                  |        |        |        |         \-----Margaret De Roucy
                  |        |        |        |                  \-----Adele De Roucy
                  |        |         \-----Maud Of Clermont
                  |        |                 |                  /-----Thierry II Count Of Bar
                  |        |                 |         /-----Renaud I Count Of Bar
                  |        |                 |        |         \-----Ermentrude Of Burgandy
                  |        |                  \-----Clemence Of Bar-Le-Duc
                  |        |                          |         /-----Gerard I Of Lorraine, Count Of Vaudemont
                  |        |                           \-----Gisele De VAUDEMONT
                  |        |                                    \-----Helwide/Edith Of Egisheim
                   \-----Joan De DAMMARTIN
                           |                                    /-----William III TALVAS, Count Of Alencon And Ponthieu
                           |                           /-----Guy II De PONTHIEU, Count Of Ponthieu
                           |                          |         \-----Helie/Alice Of Burgandy
                           |                  /-----John I De PONTHIEU, Count Of Ponthieu
                           |                 |         \-----Ida
                           |         /-----William III De PONTHIEU, Count Of Ponthieu
                           |        |        |                  /-----Hugh III Count Of St. Pol
                           |        |        |         /-----Anselme CANDAVAINE, Count Of St. Pol
                           |        |        |        |         \-----Beatrix
                           |        |         \-----Beatrice Of St. Pol
                            \-----Marie Countess Of Ponthieu
                                    |                           /-----Philip I King Of France
                                    |                  /-----Louis VI The Fat King Of France
                                    |                 |         \-----Bertha Of Holland
                                    |         /-----Louis VII The Young King Of France
                                    |        |        |         /-----Humbert II Count Of Maurienne And Savoy
                                    |        |         \-----Adelaide Of Savoy
                                    |        |                  \-----Gisele Of Burgundy
                                     \-----Alice Of France
                                             |                  /-----Raymond Of Burgandy, Count Of Castille
                                             |         /-----Alfonso VII King Of Castile And Leon
                                             |        |         \-----Urraca Queen Of Castile And Leon
                                              \-----Constance Of Castile
                                                      |         /-----Raymond Berenger III Count Of Barcelona
                                                       \-----Berenguela Of Barcelona
                                                                \-----Aldonza De CARLAT



Descendants of Edward De MONTHERMER, Lord Monthermer
1. Edward De MONTHERMER, Lord Monthermer