Genealogy of the Marshall Family,
including Medieval and Ancient Lines

Updated: 12-10-2023.

Submitted and Maintained by Bill Marshall, bill.marshall@verizon.net.


Additions and corrections appreciated (especially with sources). My current list of sources is here. Homepage here.

Index of Medieval and Ancient Lines is here, notable people here, and Gedcom may be downloaded here.

Index of Modern Lines (immigrants to America and their descendants) is here, notable people here, and Gedcom here.


Individual Page

    Person Info
  • Name: Isabeau Of Bretagne
  • Sex: F
  • Death: 14 Jan 1443 in Auray d
  • Burial: Jacobins De Nantes u


    • Parents:
  • Father:
  • John VI Duke Of Brittany Birth: 24 Dec 1389 in Chateau Of Hermine, Vannes Death: 28 Aug 1442 in La Touche, Nantes
    • Mother:
  • Jeanne Of France Birth: 24 Jan 1391 in Meulen Death: 27 Sep 1433 in Vannes

Family:
Marriage: Children:
  1. Louise De Laval
  2. Jeanne De Laval Birth: 10 Nov 1433 in Auray Death: 19 Dec 1498 in Chateau De Beaufort

Bibliography
  1. Schwennicke, Detlev, ed., Europaische Stammtafeln: Stammtafeln zur Geschichte der europaischen Staaten, New Series. XIV: Les Familles Feodales de France II. Marburg: Verlag von J. A. Stargardt, 1991. Information from this source tagged as [Ref: ES XIV #[0-9]*].
  2. Roberts, Gary Boyd, The Royal Descents of 600 Immigrants to the American Colonies or the United States: who were themselves notable or left descendants notable in American history, with a 2008 Addendum, Coda, and Final Additions. Baltimore, MD: Gen Pub Co, 2008. NYPL APK 08-4216. Information from this source tagged as [Ref: Roberts RD600 p[0-9]*].

Sources for birth and parent Information
parents:
[Ref: Roberts RD600 p106],
father:
[Ref: ES XIV #145]
Sources for death Information
date:
[Ref: ES XIV #145],
place:
[Ref: ES XIV #145]
Sources for burial Information
place:
[Ref: ES XIV #145]
Sources with Information about marriage to Guy XIV Count Of Laval
date:
[Ref: ES XIV #145],
place:
[Ref: ES XIV #145],
child:
[Ref: ES XIV #136, Roberts RD600 p106]
Research Notes:



Pedigree of Isabeau Of Bretagne
                                                                /-----Robert II Count Of Dreux
                                                       /-----Pierre De DREUX, Count Of Brittany
                                                      |         \-----Yolande De COUCY
                                              /-----John Le Roux De BRETAGNE, Duke Of Brittany
                                             |        |         /-----Gui De THOUARS, Count Of Brittany
                                             |         \-----Alix De THOUARS, Duchess Of Brittany
                                             |                  \-----Constance Countess Of Brittany
                                     /-----John De BRETAGNE, Duke Of Brittany
                                    |        |                  /-----Theobald III Count Of Champagne
                                    |        |         /-----Theobald I King Of Navarre
                                    |        |        |         \-----Blanche Of Navarre
                                    |         \-----Blanche Of Navarre
                                    |                 |         /-----Guichard IV The Great Sire De Beaujeu
                                    |                  \-----Agnes De Beaujeu
                                    |                           \-----Sibylle Of Flanders
                            /-----Arthur II De BRETAGNE, Duke Of Brittany
                           |        |                           /-----Henry II Curt Mantel PLANTAGENET, King Of England
                           |        |                  /-----John Lackland PLANTAGENET, King Of England
                           |        |                 |         \-----Eleanor Duchess Of Aquitaine
                           |        |         /-----Henry III King Of England
                           |        |        |        |         /-----Aymer Tailefer, Count Of Angouleme
                           |        |        |         \-----Isabel Of Angouleme
                           |        |        |                  \-----Alice De Courtenay
                           |         \-----Beatrice
                           |                 |                  /-----Alfonso II Count Of Provence
                           |                 |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
                           |                 |        |         \-----Gersenda II Of Sabran
                           |                  \-----Eleanor Of Provence
                           |                          |         /-----Thomas I Count Of Savoy
                           |                           \-----Beatrice Of Savoy
                           |                                    \-----Margaret Of Geneva
                   /-----John De MONTFORT, Count Of Montfort, Duke Of
                  |        |                                    /-----Robert II Count Of Dreux
                  |        |                           /-----Robert III Count Of Dreux
                  |        |                          |         \-----Yolande De COUCY
                  |        |                  /-----John I Count Of Dreux
                  |        |                 |        |         /-----Thomas De St VALERY, Baron Of Beckley
                  |        |                 |         \-----Aenor Of St Valery
                  |        |                 |                  \-----Adele De PONTHIEU
                  |        |         /-----Robert IV Count Of Dreux
                  |        |        |        |                  /-----Guy II Seigneur De Dampierre
                  |        |        |        |         /-----Archambaud IX De DAMPIERRE, Seigneur De Bourbon
                  |        |        |        |        |         \-----Matilda De BOURBON, Dame De Bourbon
                  |        |        |         \-----Maria Of Bourbon
                  |        |        |                 |         /-----Archambaud Seigneur De Montlucon
                  |        |        |                  \-----Beatrix De MONTHUCON
                  |         \-----Yolanda Of Dreux
                  |                 |                           /-----Simon IV De MONTFORT L'AUMARY
                  |                 |                  /-----Amauri De MONTFORT, Lord Of Montfort
                  |                 |                 |         \-----Alix De MONTMORENCY
                  |                 |         /-----John I Count Of Montfort-L'Aumari
                  |                 |        |        |         /-----Andre Guigues VI Count Of Viennois And Albon
                  |                 |        |         \-----Beatrix Of Vienne
                  |                 |        |                  \-----Beatrice De Sabran
                  |                  \-----Beatrix Of Montfort
                  |                          |                  /-----Geoffroy V Vicount Of Chateaudun
                  |                          |         /-----Geoffrey VI Vicomte De Chateaudun
                  |                          |        |         \-----Adele Of Nevers
                  |                           \-----Jeanne Dame De Chateau Du Loir
                  |                                   |         /-----William Of Roches, Seneschall Of Anjou
                  |                                    \-----Clemence Of Roches
                  |                                             \-----Marguerite Dame Of Sable
          /-----John MONTFORT, K.G., Duke Of Brittany
         |        |                                             /-----Guy II Seigneur De Dampierre
         |        |                                    /-----William Seigneur De Dampierre
         |        |                                   |         \-----Matilda De BOURBON, Dame De Bourbon
         |        |                           /-----Guy De Dampierre Count Of Flanders
         |        |                          |        |         /-----Baldwin IX Eastern Emperor
         |        |                          |         \-----Margaret Of Flanders
         |        |                          |                  \-----Mary Of Champagne
         |        |                  /-----Robert III Count Of Flanders
         |        |                 |        |                  /-----Guillaume II De BETHUNE, Baron Of Rothersthorpe
         |        |                 |        |         /-----Robert VII Seigneur De Bethene
         |        |                 |        |        |         \-----Mathilde Of Dendermonde
         |        |                 |         \-----Maud Of Bethune
         |        |                 |                 |         /-----Arnoul IV Lord Of Morialme
         |        |                 |                  \-----Elisabeth Of Morialme
         |        |         /-----Louis Of Flanders, Count Of Nevers
         |        |        |        |                           /-----Eudes III Duke Of Burgundy
         |        |        |        |                  /-----Hugh IV Duke Of Burgundy
         |        |        |        |                 |         \-----Alice De VERGY
         |        |        |        |         /-----Eudo Count Of Nevers
         |        |        |        |        |        |         /-----Robert III Count Of Dreux
         |        |        |        |        |         \-----Yolande De DREUX
         |        |        |        |        |                  \-----Aenor Of St Valery
         |        |        |         \-----Yolanda Of Burgundy
         |        |        |                 |                  /-----Archambaud IX De DAMPIERRE, Seigneur De Bourbon
         |        |        |                 |         /-----Archembaud Sengneur De Bourbon
         |        |        |                 |        |         \-----Beatrix De MONTHUCON
         |        |        |                  \-----Matilda Of Bourbon
         |        |        |                          |         /-----Guy I Count Of St. Pol
         |        |        |                           \-----Yolanda Of St. Pol
         |        |        |                                    \-----Agnes Of Donzy
         |         \-----Joan Of Flanders
         |                 |                                    /-----Manasses III Count Of Rethel
         |                 |                           /-----Hugh II Count Of Rethel
         |                 |                          |         \-----Mathilde Wildgrafin Of Kyrburg
         |                 |                  /-----Manasses IV Count Of Rethel
         |                 |                 |        |         /-----Simon Lord Of Beauford
         |                 |                 |         \-----Felicite De Broyes
         |                 |                 |                  \-----Agnes Of Joigny
         |                 |         /-----Hugues IV Count Of Rethel
         |                 |        |         \-----Elizabeth Of Ecry
         |                  \-----Joan Of Rethel
         |                          |                           /-----Henry III Cunt Of Grandpre
         |                          |                  /-----Henry IV Count Of Grandpre
         |                          |                 |         \-----Isabeau Of Coucy
         |                          |         /-----Henry V Count Of Grandpre
         |                          |        |        |         /-----Guillaume IV Of Garlande, Lord Of Livry
         |                          |        |         \-----Marie Of Garlande
         |                          |        |                  \-----Adele Of Chatillon
         |                           \-----Isabel De Grandpre
         |                                   |                  /-----Audre De Brienne, Lord Of Ramerupt
         |                                   |         /-----Erard De Brienne, Lord Of Ramerupt
         |                                   |        |         \-----Adelais Of Venisy
         |                                    \-----Isabeau De Brienne
         |                                            |         /-----Henry II Count Of Champagne
         |                                             \-----Philippe Of Champagne
         |                                                      \-----Isabella Of Anjou, Queen Of Jerusalem
 /-----John VI Duke Of Brittany
|        |                                                      /-----Louis VIII The Lion King Of France
|        |                                             /-----Saint Louis IX King Of France
|        |                                            |         \-----Blanche Of Castile
|        |                                    /-----Phillip III The Bold King Of France
|        |                                   |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
|        |                                   |         \-----Marguerite Of Provence
|        |                                   |                  \-----Beatrice Of Savoy
|        |                           /-----Louis Count Of Evereux
|        |                          |        |                  /-----Henry II The Conqueror Duke Of Brabant
|        |                          |        |         /-----Henry III Duke Of Brabant
|        |                          |        |        |         \-----Marie Of Swabia
|        |                          |         \-----Marie Of Brabant
|        |                          |                 |         /-----Hugh IV Duke Of Burgundy
|        |                          |                  \-----Alix Of Burgundy
|        |                          |                           \-----Yolande De DREUX
|        |                  /-----Philip III King Of Navarre, Count Of Evereux
|        |                 |        |                           /-----Robert Count Of Artois
|        |                 |        |                  /-----Robert II Count Of Artois
|        |                 |        |                 |         \-----Matilda Of Brabant
|        |                 |        |         /-----Philip Count Of Artois
|        |                 |        |        |        |         /-----Pierre De COURTENAY, Lord Of Conches
|        |                 |        |        |         \-----Amice De COURTENAY
|        |                 |        |        |                  \-----Pernel De MONTFORT
|        |                 |         \-----Margaret Of Artois
|        |                 |                 |                  /-----John Le Roux De BRETAGNE, Duke Of Brittany
|        |                 |                 |         /-----John De BRETAGNE, Duke Of Brittany
|        |                 |                 |        |         \-----Blanche Of Navarre
|        |                 |                  \-----Blanche
|        |                 |                          |         /-----Henry III King Of England
|        |                 |                           \-----Beatrice
|        |                 |                                    \-----Eleanor Of Provence
|        |         /-----Charles II King Of Navarre, Count Of Evereux
|        |        |        |                                    /-----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
|        |        |        |         /-----Louis X King Of France And Navarre
|        |        |        |        |        |                  /-----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
|        |        |         \-----Joan Of France, Queen Of Navarre
|        |        |                 |                           /-----Eudes III Duke Of Burgundy
|        |        |                 |                  /-----Hugh IV Duke Of Burgundy
|        |        |                 |                 |         \-----Alice De VERGY
|        |        |                 |         /-----Robert II Duke Of Burgundy
|        |        |                 |        |        |         /-----Robert III Count Of Dreux
|        |        |                 |        |         \-----Yolande De DREUX
|        |        |                 |        |                  \-----Aenor Of St Valery
|        |        |                  \-----Margaret Of Burgundy
|        |        |                          |                  /-----Louis VIII The Lion King Of France
|        |        |                          |         /-----Saint Louis IX King Of France
|        |        |                          |        |         \-----Blanche Of Castile
|        |        |                           \-----Agnes Of France
|        |        |                                   |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
|        |        |                                    \-----Marguerite Of Provence
|        |        |                                             \-----Beatrice Of Savoy
|         \-----Joan Of Navarre
|                 |                                             /-----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
|                 |                  /-----Philip VI King Of France
|                 |                 |        |                  /-----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
|                 |         /-----John II King Of France
|                 |        |        |                           /-----Eudes III Duke Of Burgundy
|                 |        |        |                  /-----Hugh IV Duke Of Burgundy
|                 |        |        |                 |         \-----Alice De VERGY
|                 |        |        |         /-----Robert II Duke Of Burgundy
|                 |        |        |        |        |         /-----Robert III Count Of Dreux
|                 |        |        |        |         \-----Yolande De DREUX
|                 |        |        |        |                  \-----Aenor Of St Valery
|                 |        |         \-----Joan Of Burgundy
|                 |        |                 |                  /-----Louis VIII The Lion King Of France
|                 |        |                 |         /-----Saint Louis IX King Of France
|                 |        |                 |        |         \-----Blanche Of Castile
|                 |        |                  \-----Agnes Of France
|                 |        |                          |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
|                 |        |                           \-----Marguerite Of Provence
|                 |        |                                    \-----Beatrice Of Savoy
|                  \-----Joan Of France
|                          |                                    /-----Henry II The Blond Count Of Luxembourg And La Roche
|                          |                           /-----Henry III Count Of Luxemburg
|                          |                          |         \-----Margaret Of Bar
|                          |                  /-----Henry IV Count Of Luxemburg, Emperor
|                          |                 |        |         /-----Baldwin De AVESNES
|                          |                 |         \-----Beatrix De AVESNES
|                          |                 |                  \-----Felicite De Coucy
|                          |         /-----John The Blind Of Luxemburg, King Of Bohemia
|                          |        |        |                  /-----Henry III Duke Of Brabant
|                          |        |        |         /-----John I The Victorious Duke Of Brabant
|                          |        |        |        |         \-----Alix Of Burgundy
|                          |        |         \-----Margaret Of Brabant
|                          |        |                 |         /-----Guy De Dampierre Count Of Flanders
|                          |        |                  \-----Margaret Of Flanders
|                          |        |                           \-----Maud Of Bethune
|                           \-----Judith Of Bohemia
|                                   |                           /-----Wenceslas I King Of Bohemia
|                                   |                  /-----Premsyl Otakar II King Of Bohemia
|                                   |                 |         \-----Kunigunde Of Swabia
|                                   |         /-----Wenzel II King Of Bohemia
|                                   |        |        |         /-----Rostislaus Prince Of Kiev
|                                   |        |         \-----Cunigunde Of Kiev
|                                   |        |                  \-----Anne Of Hungary
|                                    \-----Elizabeth Of Bohemia
|                                            |                  /-----Albrecht IV Count Of Habsburg
|                                            |         /-----Rudolph I Emperor, Count Of Hapsburg
|                                            |        |         \-----Heilwig Of Kiburg
|                                             \-----Judith Of Hapsburg
|                                                     |         /-----Burchard III Count Of Hohenberg And Zollern
|                                                      \-----Gertrude Anna Of Hohenberg
|                                                               \-----Mechtild Of Tubingen
Isabeau Of Bretagne
|                                                               /-----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
|                                    /-----Philip VI King Of France
|                                   |        |                  /-----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
|                           /-----John II King Of France
|                          |        |                           /-----Eudes III Duke Of Burgundy
|                          |        |                  /-----Hugh IV Duke Of Burgundy
|                          |        |                 |         \-----Alice De VERGY
|                          |        |         /-----Robert II Duke Of Burgundy
|                          |        |        |        |         /-----Robert III Count Of Dreux
|                          |        |        |         \-----Yolande De DREUX
|                          |        |        |                  \-----Aenor Of St Valery
|                          |         \-----Joan Of Burgundy
|                          |                 |                  /-----Louis VIII The Lion King Of France
|                          |                 |         /-----Saint Louis IX King Of France
|                          |                 |        |         \-----Blanche Of Castile
|                          |                  \-----Agnes Of France
|                          |                          |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
|                          |                           \-----Marguerite Of Provence
|                          |                                    \-----Beatrice Of Savoy
|                  /-----Charles V King Of France
|                 |        |                                    /-----Henry II The Blond Count Of Luxembourg And La Roche
|                 |        |                           /-----Henry III Count Of Luxemburg
|                 |        |                          |         \-----Margaret Of Bar
|                 |        |                  /-----Henry IV Count Of Luxemburg, Emperor
|                 |        |                 |        |         /-----Baldwin De AVESNES
|                 |        |                 |         \-----Beatrix De AVESNES
|                 |        |                 |                  \-----Felicite De Coucy
|                 |        |         /-----John The Blind Of Luxemburg, King Of Bohemia
|                 |        |        |        |                  /-----Henry III Duke Of Brabant
|                 |        |        |        |         /-----John I The Victorious Duke Of Brabant
|                 |        |        |        |        |         \-----Alix Of Burgundy
|                 |        |        |         \-----Margaret Of Brabant
|                 |        |        |                 |         /-----Guy De Dampierre Count Of Flanders
|                 |        |        |                  \-----Margaret Of Flanders
|                 |        |        |                           \-----Maud Of Bethune
|                 |         \-----Judith Of Bohemia
|                 |                 |                           /-----Wenceslas I King Of Bohemia
|                 |                 |                  /-----Premsyl Otakar II King Of Bohemia
|                 |                 |                 |         \-----Kunigunde Of Swabia
|                 |                 |         /-----Wenzel II King Of Bohemia
|                 |                 |        |        |         /-----Rostislaus Prince Of Kiev
|                 |                 |        |         \-----Cunigunde Of Kiev
|                 |                 |        |                  \-----Anne Of Hungary
|                 |                  \-----Elizabeth Of Bohemia
|                 |                          |                  /-----Albrecht IV Count Of Habsburg
|                 |                          |         /-----Rudolph I Emperor, Count Of Hapsburg
|                 |                          |        |         \-----Heilwig Of Kiburg
|                 |                           \-----Judith Of Hapsburg
|                 |                                   |         /-----Burchard III Count Of Hohenberg And Zollern
|                 |                                    \-----Gertrude Anna Of Hohenberg
|                 |                                             \-----Mechtild Of Tubingen
|         /-----Charles VI King Of France
|        |        |                                             /-----Louis VIII The Lion King Of France
|        |        |                                    /-----Saint Louis IX King Of France
|        |        |                                   |         \-----Blanche Of Castile
|        |        |                           /-----Robert Count Of Clermont, Seigneur De Bourbon
|        |        |                          |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
|        |        |                          |         \-----Marguerite Of Provence
|        |        |                          |                  \-----Beatrice Of Savoy
|        |        |                  /-----Louis I Duke Of Bourbon, Count Of Clermont
|        |        |                 |        |                  /-----Hugh IV Duke Of Burgundy
|        |        |                 |        |         /-----John Of Burgundy
|        |        |                 |        |        |         \-----Yolande De DREUX
|        |        |                 |         \-----Beatrix Of Bourbon
|        |        |                 |                 |         /-----Archembaud Sengneur De Bourbon
|        |        |                 |                  \-----Agnes Of Bourbon
|        |        |                 |                           \-----Yolanda Of St. Pol
|        |        |         /-----Peter I Duke Of Bourbon
|        |        |        |        |                           /-----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
|        |        |        |         \-----Mary Of Hainault
|        |        |        |                 |                  /-----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
|        |         \-----Jeanne Of Bourbon
|        |                 |                                    /-----Louis VIII The Lion King Of France
|        |                 |                           /-----Saint Louis IX King Of France
|        |                 |                          |         \-----Blanche Of Castile
|        |                 |                  /-----Phillip III The Bold King Of France
|        |                 |                 |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
|        |                 |                 |         \-----Marguerite Of Provence
|        |                 |                 |                  \-----Beatrice Of Savoy
|        |                 |         /-----Charles Count Of Valois And Anjou
|        |                 |        |        |                  /-----Peter II King Of Aragon
|        |                 |        |        |         /-----James I The Conqueror King Of Aragon
|        |                 |        |        |        |         \-----Mary Of Montpellier
|        |                 |        |         \-----Isabelle Of Aragon
|        |                 |        |                 |         /-----Andrew II King Of Hungary
|        |                 |        |                  \-----Iolande Of Hungary
|        |                 |        |                           \-----Iolande De Courtenay
|        |                  \-----Isabel Of Valois
|        |                          |                           /-----Hugh Of Chatillon, Count Of Blois
|        |                          |                  /-----Guy II Of Chatilion, Count Of St. Pol
|        |                          |                 |         \-----Mary Of Avesnes, Countess Of Blois
|        |                          |         /-----Guy III Of Chatilion, Count Of St. Pol
|        |                          |        |        |         /-----Henry II The Conqueror Duke Of Brabant
|        |                          |        |         \-----Matilda Of Brabant
|        |                          |        |                  \-----Marie Of Swabia
|        |                           \-----Maud De CHATILLON
|        |                                   |                  /-----John Le Roux De BRETAGNE, Duke Of Brittany
|        |                                   |         /-----John De BRETAGNE, Duke Of Brittany
|        |                                   |        |         \-----Blanche Of Navarre
|        |                                    \-----Marie Of Brittany
|        |                                            |         /-----Henry III King Of England
|        |                                             \-----Beatrice
|        |                                                      \-----Eleanor Of Provence
 \-----Jeanne Of France
         |                                                      /-----Louis I Duke Of Bavaria
         |                                             /-----Otto II Von Wittelsbach, Duke Of Bavaria
         |                                            |         \-----Ludmilla Duchess Of Bohemia
         |                                    /-----Louis II Duke Of Upper Bavaria
         |                                   |        |         /-----Henry Count Palatine Of Rhine
         |                                   |         \-----Agnes Of Celle
         |                                   |                  \-----Agnes Of Staufen
         |                           /-----Louis The Bavarian Count Of Hainault, German King
         |                          |        |                  /-----Albrecht IV Count Of Habsburg
         |                          |        |         /-----Rudolph I Emperor, Count Of Hapsburg
         |                          |        |        |         \-----Heilwig Of Kiburg
         |                          |         \-----Mathilde Of Habsburg
         |                          |                 |         /-----Burchard III Count Of Hohenberg And Zollern
         |                          |                  \-----Gertrude Anna Of Hohenberg
         |                          |                           \-----Mechtild Of Tubingen
         |                  /-----Stephen II Duke Of Bavaria
         |                 |        |         /-----Bolko I Duke of Jauer and Schweidnitz
         |                 |         \-----Beatrix Of Silesta-Glogau
         |                 |                  \-----Beatrix Of Brandenburg
         |         /-----Stephen III Duke Of Bavaria
         |        |        |                                    /-----Peter II King Of Aragon
         |        |        |                           /-----James I The Conqueror King Of Aragon
         |        |        |                          |         \-----Mary Of Montpellier
         |        |        |                  /-----Peter III King Of Aragon And Sicily
         |        |        |                 |        |         /-----Andrew II King Of Hungary
         |        |        |                 |         \-----Iolande Of Hungary
         |        |        |                 |                  \-----Iolande De Courtenay
         |        |        |         /-----Frederick II King Of Sicily
         |        |        |        |        |                  /-----Frederick II Duke Of Swabia, King Of Sicily, Emperor
         |        |        |        |        |         /-----Manfred King Of Sicily
         |        |        |        |        |        |         \-----Blanca LANCIA
         |        |        |        |         \-----Constance Of Sicily
         |        |        |        |                 |         /-----Amadeus IV Count Of Savoy, Marquess Of Turin
         |        |        |        |                  \-----Beatrice Of Savoy
         |        |        |        |                           \-----Anna Of Burgundy
         |        |         \-----Elizabeth Of Sicily
         |        |                 |                           /-----Louis VIII The Lion King Of France
         |        |                 |                  /-----Charles Of Anjou, Count Of Provence
         |        |                 |                 |         \-----Blanche Of Castile
         |        |                 |         /-----Charles II The Lame King Of Naples
         |        |                 |        |        |         /-----Raymond Berengar IV Count Of Provence And Forcalquier
         |        |                 |        |         \-----Beatrix Countess Of Provence
         |        |                 |        |                  \-----Beatrice Of Savoy
         |        |                  \-----Eleanor Of Naples
         |        |                          |                  /-----Bela IV King Of Hungary
         |        |                          |         /-----Stephen V King Of Hungary
         |        |                          |        |         \-----Mary Of Nicaca
         |        |                           \-----Mary Of Hungary
         |        |                                   |         /-----Kuthen Khan Of Cumans
         |        |                                    \-----Elizabeth Of Cumans
         |        |                                             \-----(Unk) De HALICH
          \-----Isabella Of Bavaria
                  |                                             /-----Andrew VISCONTI
                  |                                    /-----Theobald VISCONTI
                  |                           /-----Matthew I VISCONTI, Lord of Milan
                  |                  /-----Stefano Visconti, Lord Of Arona
                  |                 |         \-----Bonacossa BORRI
                  |         /-----Barnabo VISCONTI. Duke Of Milan
                  |        |        |                  /-----Branca DORIA
                  |        |        |         /-----Barnabo DORIA
                  |        |         \-----Valentina DORIA
                  |        |                  \-----Eliana Di Federigo FIESCHE
                   \-----Thaddea VISCONTI
                           |                                    /-----Jacopino Della Scala
                           |                           /-----Alberto I Lord Of Verona
                           |                          |         \-----Elisabeth Superbi
                           |                  /-----Alboino De La Scala, Lord Of Verona
                           |                 |         \-----Verde Of Salizzole
                           |         /-----Mastin II De La Scala, Lord Of Verona
                           |        |        |                  /-----Guy De Corregio
                           |        |        |         /-----Gilbert De Corregio, Lord Of Parma
                           |        |        |        |         \-----Mabile Della Gente
                           |        |         \-----Beatrice Of Correggio
                           |        |                 |         /-----Morello Malaspina Marquess Of Mulazzo
                           |        |                  \-----Helena Malaspina
                           |        |                           \-----Berlande
                            \-----Beatrix De La Scala
                                    |         /-----Jacomo Lord Of Padua
                                     \-----Thaddea De CURRARA
                                              \-----Elisabetta Gradenigo



Descendants of Isabeau Of Bretagne
1. Isabeau Of Bretagne m. Guy XIV Count Of Laval
m. Guy XIV Count Of Laval father: Jean Guy XIII Of Montfort, Lord Of Kergolay mother: Anne Dame Of Laval

2nd generation

2. Louise De Laval m. Jean III De BRAOSE, Count Of Penthievre
m. Jean III De BRAOSE, Count Of Penthievre

3rd generation

4. Isabel De BRAOSE m. Jean IV De RIEUX, Count Of Harcourt
m. Jean IV De RIEUX, Count Of Harcourt

4th generation

5. Jean De RIEUX, Seigneur De Chateauneuf m. Beatrix De JONCHERES
m. Beatrix De JONCHERES

5th generation

6. Rene De RIEUX, Seigneur De Sourdeac m. Susanne De Sainte Melaine
m. Susanne De Sainte Melaine