Constance Penthièvre Duchess Brittany 1161-1201

Paternal Family Tree: Vannes

Maternal Family Tree: Adela Valois Countess Blois and Vermandois

In 1161 Constance Penthièvre Duchess Brittany was born to Conan "The Young" Penthièvre IV Duke Brittany [aged 23] and Margaret Dunkeld Duchess Brittany [aged 16]. She a great x 2 granddaughter of King Henry I "Beauclerc" England.

Between February 1171 and April 1175 [her step-father] Humphrey Bohun [aged 27] and [her mother] Margaret Dunkeld Duchess Brittany [aged 26] were married. She the daughter of [her grandfather] Henry Dunkeld 3rd Earl Huntingdon 1st Earl of Northumbria and [her grandmother] Ada Warenne Countess Huntingdon and Northumbria [aged 51].

On 20th February 1171 [her father] Conan "The Young" Penthièvre IV Duke Brittany [aged 33] died. His daughter Constance [aged 10] succeeded Duchess Brittany, 3rd Countess Richmond.

On 30th June 1181 Hugh de Kevelioc Gernon 5th Earl Chester [aged 34] died at Leek, Staffordshire [Map]. His son [her future husband] Ranulf [aged 11] succeeded 6th Earl Chester.

In July 1181 Geoffrey Plantagenet 2nd Duke Brittany [aged 22] and Constance Penthièvre Duchess Brittany [aged 20] were married. She by marriage Duchess Brittany. He by marriage Duke Brittany. She the daughter of Conan "The Young" Penthièvre IV Duke Brittany and Margaret Dunkeld Duchess Brittany [aged 36]. He the son of King Henry "Curtmantle" II of England [aged 48] and Eleanor of Aquitaine Queen Consort Franks and England [aged 59]. They were half second cousin once removed. She a great x 2 granddaughter of King Henry I "Beauclerc" England.

In 1184 [her daughter] Eleanor "Fair Maid of Britanny" 4th Countess of Richmond was born to [her husband] Geoffrey Plantagenet 2nd Duke Brittany [aged 25] and Constance Penthièvre Duchess Brittany [aged 23] at Bristol Castle, Gloucestershire [Map]. She a granddaughter of King Henry "Curtmantle" II of England.

In 1185 [her daughter] Maud or Matilda Plantagenet was born to [her husband] Geoffrey Plantagenet 2nd Duke Brittany [aged 26] and Constance Penthièvre Duchess Brittany [aged 24]. She a granddaughter of King Henry "Curtmantle" II of England. She died aged four in 1189.

On 19th August 1186 [her husband] Geoffrey Plantagenet 2nd Duke Brittany [aged 27] died at Paris [Map].

Annals of Six Kings of England by Nicholas Trivet. 1187. Henry, king of England, crossed over into Normandy on the thirteenth day before the Kalends of March [17th February 1187]. Gilbert of London died on the twelfth day before the Kalends of March [17th February 1187]. Constance [aged 26], countess of Brittany, widow of [her former husband] Geoffrey, gave birth on the fourth day before the Kalends of April [29th March 1187] to a posthumous son, who was called Arthur.

1187. HENRICUS rex Angliæ, decimo tertio cal. Martii, in Normanniam transfretavit. Obiit Gilebertus Londoniensis duodecimo cal. Martii. Constantia comitissa Britanniæ, relicta Galfridi, posthumous quarto cal. Aprilis peperit filium, qui vocatus est Arthurus.

On 29th March 1187 [her son] Prince Arthur 3rd Duke Brittany was born posthumously to [her former husband] Geoffrey Plantagenet 2nd Duke Brittany and Constance Penthièvre Duchess Brittany [aged 26]. He a grandson of King Henry "Curtmantle" II of England.

Jean de Waurin's Chronicle of England Volume 6 Books 3-6: The Wars of the Roses

Jean de Waurin was a French Chronicler, from the Artois region, who was born around 1400, and died around 1474. Waurin’s Chronicle of England, Volume 6, covering the period 1450 to 1471, from which we have selected and translated Chapters relating to the Wars of the Roses, provides a vivid, original, contemporary description of key events some of which he witnessed first-hand, some of which he was told by the key people involved with whom Waurin had a personal relationship.

Available at Amazon in eBook and Paperback format.

In 1188 Ranulf de Blondeville Gernon 6th Earl Chester 1st Earl Lincoln [aged 18] and Constance Penthièvre Duchess Brittany [aged 27] were married. She by marriage Countess Chester. She the daughter of Conan "The Young" Penthièvre IV Duke Brittany and Margaret Dunkeld Duchess Brittany [aged 43]. He the son of Hugh de Kevelioc Gernon 5th Earl Chester and Bertrade Montfort Countess Chester. They were half third cousins. He a great x 2 grandson of King Henry I "Beauclerc" England. She a great x 2 granddaughter of King Henry I "Beauclerc" England.

Before May 1189 [her daughter] Maud or Matilda Plantagenet [aged 4] died.

Before 1194 [her uncle] David Dunkeld 8th Earl Huntingdon [aged 41] and [her sister-in-law] Matilda Gernon Countess Huntingdon [aged 22] were married. She by marriage Countess Huntingdon. She the daughter of Hugh de Kevelioc Gernon 5th Earl Chester and Bertrade Montfort Countess Chester. He the son of [her grandfather] Henry Dunkeld 3rd Earl Huntingdon 1st Earl of Northumbria and [her grandmother] Ada Warenne Countess Huntingdon and Northumbria. They were half fourth cousin once removed. She a great x 2 granddaughter of King Henry I "Beauclerc" England.

In 1199 [her half-brother] Henry Bohun 1st Earl Hereford [aged 23] was created 1st Earl Hereford.

Before 1200 Guy Thouars [aged 59] and Constance Penthièvre Duchess Brittany [aged 38] were married. The difference in their ages was 21 years. She the daughter of Conan "The Young" Penthièvre IV Duke Brittany and Margaret Dunkeld Duchess Brittany [aged 54]. They were half fourth cousin once removed. She a great x 2 granddaughter of King Henry I "Beauclerc" England.

In 1201 [her mother] Margaret Dunkeld Duchess Brittany [aged 56] died.

On 1st September 1201 [her daughter] Catherine Thouars was born to [her husband] Guy Thouars [aged 61] and Constance Penthièvre Duchess Brittany [aged 40]. She a great x 3 granddaughter of King Henry I "Beauclerc" England.

On 5th September 1201 [her daughter] Alix Thouars Duchess of Brittany was born to [her husband] Guy Thouars [aged 61] and Constance Penthièvre Duchess Brittany [aged 40]. She a great x 3 granddaughter of King Henry I "Beauclerc" England. She married in or before 1217 her fourth cousin Peter of Dreux aka Mauclerc Duke Brittany, son of Robert Capet II Count Dreux and Yolande Coucy Countess Dreux, and had issue.

On 5th September 1201 Constance Penthièvre Duchess Brittany [aged 40] died. Her son Prince [aged 14] succeeded 3rd Duke Brittany, 4th Earl Richmond.

On 12th April 1213 [her former husband] Guy Thouars [aged 73] died.

Chronicle of a Bourgeois of Valenciennes

Récits d’un bourgeois de Valenciennes aka The Chronicle of a Bourgeois of Valenciennes is a vivid 14th-century vernacular chronicle written by an anonymous urban chronicler from Valenciennes in the County of Hainaut. It survives in a manuscript that describes local and regional history from about 1253 to 1366, blending chronology, narrative episodes, and eyewitness-style accounts of political, military, and social events in medieval France, Flanders, and the Low Countries. The work begins with a chronological framework of events affecting Valenciennes and its region under rulers such as King Philip VI of France and the shifting allegiances of local nobility. It includes accounts of conflicts, sieges, diplomatic manoeuvres, and the impact of broader struggles like the Hundred Years’ War on urban life in Hainaut. Written from the perspective of a burgher (bourgeois) rather than a monastery or royal court, the chronicle offers a rare lay viewpoint on high politics and warfare, reflecting how merchants, townspeople, and civic institutions experienced the turbulence of the 13th and 14th centuries. Its narrative style combines straightforward reporting of events with moral and civic observations, making it a valuable source for readers interested in medieval urban society, regional politics, and the lived experience of war and governance in pre-modern Europe.

Available at Amazon in eBook and Paperback format.

On 26th October 1232 [her former husband] Ranulf de Blondeville Gernon 6th Earl Chester 1st Earl Lincoln [aged 62] died at Wallingford Castle [Map]. His nephew John [aged 25] succeeded 7th Earl Chester.

William de Hertburn Fitzpatrick and [her mother] Margaret Dunkeld Duchess Brittany were married. She the daughter of [her grandfather] Henry Dunkeld 3rd Earl Huntingdon 1st Earl of Northumbria and [her grandmother] Ada Warenne Countess Huntingdon and Northumbria.

[her son] Thomas Thouars was born to Guy Thouars and Constance Penthièvre Duchess Brittany. He a great x 3 grandson of King Henry I "Beauclerc" England.

[her son] Pierre Thouars was born to Guy Thouars and Constance Penthièvre Duchess Brittany. He a great x 3 grandson of King Henry I "Beauclerc" England.

Constance Penthièvre Duchess Brittany 1161-1201 appears on the following Descendants Family Trees:

Royal Ancestors of Constance Penthièvre Duchess Brittany 1161-1201

Kings Wessex: Great x 4 Grand Daughter of King Edmund "Ironside" I of England

Kings England: Great x 2 Grand Daughter of King Henry I "Beauclerc" England

Kings Scotland: Great Grand Daughter of King David I of Scotland

Kings France: Great x 5 Grand Daughter of Hugh I King of the Franks

Kings Duke Aquitaine: Great x 9 Grand Daughter of Ranulf I Duke Aquitaine

Royal Descendants of Constance Penthièvre Duchess Brittany 1161-1201
Number after indicates the number of unique routes of descent. Descendants of Kings and Queens not included.

Agnes de la Marck Queen Consort Navarre [1]

Eleanor "Fair Maid of Britanny" 4th Countess of Richmond [1]

Philip "Noble" III King Navarre [1]

Blanche Valois Holy Roman Empress Luxemburg [1]

Blanche Dampierre Queen Consort Norway and Sweden [1]

Blanche Bourbon Queen Consort Castile [1]

Yolande of Bar Queen Consort Aragon [1]

Charles "Beloved Mad" VI King France [1]

King Louis of Naples [1]

Jacquetta of Luxemburg Duchess Bedford [1]

Mary of Guelders Queen Consort Scotland [1]

King Edward IV of England [1]

King Richard III of England [1]

Anne Neville Queen Consort England [1]

Louis XII King France [2]

Jean III King Navarre [1]

Charles VIII King France [1]

Bianca Maria Sforza Holy Roman Empress [1]

Philip "Handsome Fair" King Castile [3]

Germaine Foix Queen Consort Aragon [2]

Marguerite Valois Orléans Queen Consort Navarre [4]

King Francis I of France [4]

Queen Anne Boleyn of England [1]

Queen Jane Seymour [2]

Anne of Cleves Queen Consort England [3]

Mary of Guise Queen Consort Scotland [7]

Antoine King Navarre [5]

King Henry II of France [2]

Queen Catherine Howard of England [1]

Maximilian Habsburg Spain II Holy Roman Emperor [2]

Jane Grey I Queen England and Ireland [1]

Louis VI Elector Palatine [1]

Francis II King France King Consort Scotland [1]

Elizabeth Valois Queen Consort Spain [1]

Charles IX King France [1]

Henry III King France [1]

Louise Lorraine Queen Consort France [4]

King James I of England and Ireland and VI of Scotland [2]

Maximilian "The Great" Wittelsbach I Duke Bavaria I Elector Bavaria [7]

Maria Anna Wittelsbach Holy Roman Empress [7]

Electress Louise Juliana of the Palatine Rhine [3]

Ferdinand of Spain II Holy Roman Emperor [5]

George Wharton [13]

Margaret of Austria Queen Consort Spain [5]

Anna of Austria Holy Roman Empress [5]

Louis XIII King France [2]

Elisabeth Bourbon Queen Consort Spain [2]

Henrietta Maria Bourbon Queen Consort England [2]

John George Wettin Elector Saxony [5]

Frederick William "Great Elector" Hohenzollern Elector Brandenburg [5]

Eleonora Gonzaga Queen Consort Bohemia [10]

Maria Leopoldine Habsburg Spain Queen Consort Bohemia [5]

Hedwig Eleonora Queen Consort Sweden [5]

Marie Françoise Élisabeth of Savoy Queen Consort of Portugal [17]

Charlotte Amalie Hesse-Kassel Queen Consort Denmark and Norway [5]

Victor Amadeus King Sardinia [23]

Louise of Mecklenburg Güstrow Queen Consort Denmark and Norway [5]

Maria Anna Neuburg Queen Consort Spain [10]

Frederick I King Sweden [15]

Joseph I Holy Roman Emperor [10]

Charles Habsburg Spain VI Holy Roman Emperor [10]

Francis I Holy Roman Emperor [5]

Adolph Frederick King Sweden [5]

Elisabeth Therese Lorraine Queen Consort Sardinia [5]

King George III of Great Britain and Ireland [10]

William Elector of Hesse [15]

Charlotte Mecklenburg Strelitz Queen Consort England [5]

Caroline Matilda Hanover Queen Consort Denmark and Norway [10]

Marie Sophie Hesse-Kassel Queen Consort Denmark and Norway [15]

Caroline of Brunswick Queen Consort England [10]

Frederick William III King Prussia [5]

Frederica Mecklenburg Strelitz Queen Consort Hanover [10]

Queen Fredrika Dorotea Vilhelmina [10]

King Christian I of Norway and VIII of Denmark [15]

Frederick William IV King Prussia [10]

William I King Prussia [10]

Frederick VII King of Denmark [25]

Queen Louise Hesse-Kassel of Denmark [30]

King Christian IX of Denmark [15]

Queen Victoria of the United Kingdom [20]

Queen Sophia of Sweden and Norway [25]

Victoria Empress Germany Queen Consort Prussia [55]

King Edward VII of the United Kingdom [55]

Maria Christina of Austria Queen Consort Spain [15]

Brigadier-General Charles Fitz-Clarence [49]

Victoria Mary Teck Queen Consort England [30]

Frederick Charles I King Finland [30]

Constantine I King Greece [15]

Alexandrine Mecklenburg-Schwerin Queen Consort Denmark [40]

Victoria Eugénie Mountbatten Queen Consort Spain [70]

Louise Mountbatten Queen Consort Sweden [85]

Ingrid Bernadotte Queen Consort Denmark [65]

Philip Mountbatten Duke Edinburgh [100]

Queen Elizabeth II of the United Kingdom [200]

Carl XVI King Sweden [135]

Queen Consort Camilla Shand [84]

Diana Spencer Princess Wales [744]

Catherine Middleton Princess of Wales [2]

Ancestors of Constance Penthièvre Duchess Brittany 1161-1201

Great x 3 Grandfather: Geoffrey Penthièvre I Duke Brittany 7 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 4 Grandmother: Ermengarde Gerberga Ingelger Duchess Brittany 6 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 2 Grandfather: Odo I Count Penthièvre 8 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 3 Grandmother: Hawise Normandy Countess Rennes

Great x 4 Grandmother: Gunnora Countess Ponthieu

Great x 1 Grandfather: Stephen Penthièvre Count Tréguier 9 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 4 Grandfather: Benoît Canhiart Bishop Cornouaille

Great x 3 Grandfather: Alan Canhiart Count Cornouaille

Great x 4 Grandmother: Guigoëdon Vannes

Great x 2 Grandmother: Agnes Canhiart

Grandfather: Alan "Black" Penthièvre 1st Earl Richmond 10 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 1 Grandmother: Hawise Guingamp

father: Conan "The Young" Penthièvre IV Duke Brittany Great Grandson of King Henry I "Beauclerc" England

Great x 4 Grandfather: Alan Canhiart Count Cornouaille

Great x 3 Grandfather: Hoël Canhiart II Duke Brittany

Great x 4 Grandmother: Judith Poher Countess Cornouaille and Nantes

Great x 2 Grandfather: Alan Canhiart IV Duke Brittany 6 x Great Grandson of King Edward "Elder" of the Anglo Saxons

Great x 4 Grandfather: Alan Penthièvre III Duke Brittany 8 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 3 Grandmother: Hawise Penthièvre Countess Cornouaille 5 x Great Granddaughter of King Edward "Elder" of the Anglo Saxons

Great x 4 Grandmother: Bertha Blois Duchess Brittany 4 x Great Granddaughter of King Edward "Elder" of the Anglo Saxons

Great x 1 Grandfather: Conan "Fat" Canhiart III Duke Brittany 7 x Great Grandson of King Edward "Elder" of the Anglo Saxons

Great x 3 Grandfather: Fulk "Réchin" Anjou 4th Count Anjou 8 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 4 Grandmother: Ermengarde Blanche Ingelger Duchess Burgundy 7 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 2 Grandmother: Ermengarde Anjou Duchess Brittany and Aquitaine 9 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 3 Grandmother: Hildegarde Beaugency Countess Anjou

Grandmother: Bertha Canhiart I Duchess Brittany Granddaughter of King Henry I "Beauclerc" England

Great x 4 Grandfather: Robert "Magnificent" Normandy I Duke Normandy 8 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 3 Grandfather: King William "Conqueror" I of England -2 x Great Grandson of King William "Conqueror" I of England

Great x 4 Grandmother: Herleva of Falaise

Great x 2 Grandfather: King Henry I "Beauclerc" England son of King William "Conqueror" I of England

Great x 4 Grandfather: Baldwin "The Good" V Count Flanders 4 x Great Grandson of King Alfred "The Great" of Wessex

Great x 3 Grandmother: Matilda Flanders Queen Consort England Great Granddaughter of Hugh I King of the Franks

Great x 4 Grandmother: Adela Capet Duchess Normandy Granddaughter of Hugh I King of the Franks

Great x 1 Grandmother: Matilda Fitzroy Duchess Brittany daughter of King Henry I "Beauclerc" England

Constance Penthièvre Duchess Brittany Great Granddaughter of King David I of Scotland

Great x 3 Grandfather: King Duncan I of Scotland -2 x Great Grandson of King Duncan I of Scotland

Great x 2 Grandfather: King Malcolm III of Scotland son of King Duncan I of Scotland

Great x 1 Grandfather: King David I of Scotland son of King Malcolm III of Scotland

Great x 4 Grandfather: King Edmund "Ironside" I of England son of King Æthelred II of England

Great x 3 Grandfather: Edward "The Exile" Wessex son of King Edmund "Ironside" I of England

Great x 4 Grandmother: Ealdgyth Unknown

Great x 2 Grandmother: Margaret Wessex Queen Consort Scotland Granddaughter of King Edmund "Ironside" I of England

Great x 3 Grandmother: Agatha

Grandfather: Henry Dunkeld 3rd Earl Huntingdon 1st Earl of Northumbria son of King David I of Scotland

Great x 3 Grandfather: Siward "Stout" Earl of Northumbria

Great x 2 Grandfather: Waltheof Northumbria 1st Earl of Northampton 1st Earl Huntingdon

Great x 4 Grandfather: Ealdred Northumbria Earl Bernicia

Great x 3 Grandmother: Aelfflaed Northumbria

Great x 1 Grandmother: Maud Queen Consort Scotland 6 x Great Granddaughter of King Edward "Elder" of the Anglo Saxons

Great x 4 Grandfather: Eustace Flanders I Count Boulogne 4 x Great Grandson of King Alfred "The Great" of Wessex

Great x 3 Grandfather: Lambert Flanders II Count Lens 4 x Great Grandson of King Edward "Elder" of the Anglo Saxons

Great x 4 Grandmother: Matilda Reginar Countess Boulogne 3 x Great Granddaughter of King Edward "Elder" of the Anglo Saxons

Great x 2 Grandmother: Judith Flanders Countess Huntingdon 5 x Great Granddaughter of King Edward "Elder" of the Anglo Saxons

Great x 4 Grandfather: Robert "Magnificent" Normandy I Duke Normandy 8 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 3 Grandmother: Adelaide Normandy Countess Troyes and Meaux Champagne Aumale Ponthieu 9 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

mother: Margaret Dunkeld Duchess Brittany Granddaughter of King David I of Scotland

Great x 3 Grandfather: Ralph Warenne

Great x 2 Grandfather: William Warenne 1st Earl of Surrey

Great x 1 Grandfather: William Warenne 2nd Earl of Surrey

Great x 3 Grandfather: Gerbod The Fleming

Great x 2 Grandmother: Gundred Countess of Surrey

Grandmother: Ada Warenne Countess Huntingdon and Northumbria 3 x Great Granddaughter of Hugh I King of the Franks

Great x 4 Grandfather: Robert "Pious" II King of the Franks son of Hugh I King of the Franks

Great x 3 Grandfather: Henry I King of the Franks Grandson of Hugh I King of the Franks

Great x 4 Grandmother: Constance Arles Queen Consort France

Great x 2 Grandfather: Hugh "Great" Capet Great Grandson of Hugh I King of the Franks

Great x 4 Grandfather: Yaroslav "The Wise" Rurik

Great x 3 Grandmother: Anne of Kiev Queen Consort Francia

Great x 1 Grandmother: Elizabeth Capet Countess Leicester, Meulan and Surrey 2 x Great Granddaughter of Hugh I King of the Franks

Great x 4 Grandfather: Otto Vermandois I Count Vermandois 6 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 3 Grandfather: Herbert Vermandois IV Count Vermandois 7 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 4 Grandmother: Pavia Countess Vermandois

Great x 2 Grandmother: Adelaide I Countess Vermandois 8 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor

Great x 4 Grandfather: Ralph IV Count of Valois

Great x 3 Grandmother: Adela Valois Countess Blois and Vermandois