Biography of John Capet III Duke Brittany 1286-1341
Paternal Family Tree: Capet
Maternal Family Tree: Beatrice St Pol Countess Ponthieu 1145-1204
In 1275 [his father] Arthur Capet Duke Brittany (age 13) and [his mother] Marie Limoges Duchess Brittany were married. She by marriage Duchess Brittany 1221 Dreux. He the son of John Capet II Duke Brittany (age 36) and Beatrice Plantagenet (age 32). They were third cousins. He a grandson of King Henry III of England.
On 08 Mar 1286 John Capet III Duke Brittany was born to Arthur Capet Duke Brittany (age 24) and Marie Limoges Duchess Brittany. He a great grandson of King Henry III of England.
On 01 Dec 1291 James "The Just" II King Aragon (age 24) and [his future wife] Isabella Ivrea Queen Consort Aragon (age 8) were married. She by marriage Queen Consort Aragon. She the daughter of Sancho IV King Castile IV King Leon (age 33) and Maria Molina Queen Consort Castile Queen Consort Leon. He the son of Peter III King Aragon and Constance Hohenstaufen Queen Consort Aragon (age 42). They were first cousin once removed. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.
In or before 1295 [his father] Arthur Capet Duke Brittany (age 33) and [his step-mother] Yolande Capet Duchess Brittany (age 33) were married. She by marriage Duchess Brittany 1221 Dreux. She the daughter of Robert Capet IV Count Dreux and Beatrice Montfort Countess Dreux (age 46). He the son of John Capet II Duke Brittany (age 55) and Beatrice Plantagenet. They were third cousins. He a grandson of King Henry III of England. She a great x 5 granddaughter of King Henry I "Beauclerc" England.
In 1297 John Capet III Duke Brittany (age 10) and Isabelle Valois Duchess Brittany (age 5) were married. She by marriage Duchess Brittany 1221 Dreux. She the daughter of Charles Valois I Count Valois (age 26) and Margaret Capet Countess Valois (age 24). They were third cousins. He a great grandson of King Henry III of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.
In 1299 [his sister-in-law] Catherine Valois died.
On 18 Nov 1305 [his grandfather] John Capet II Duke Brittany (age 66) died. His son [his father] Arthur Capet Duke Brittany (age 44) succeeded 3rd Duke Brittany 1221 Dreux.
In 1308 [his brother-in-law] John Valois (age 6) died.
In 1309 [his wife] Isabelle Valois Duchess Brittany (age 17) died.
In 1310 John Capet III Duke Brittany (age 23) and Isabella Ivrea Queen Consort Aragon (age 27) were married. She by marriage Duchess Brittany 1221 Dreux. She the daughter of Sancho IV King Castile IV King Leon and Maria Molina Queen Consort Castile Queen Consort Leon. He a great grandson of King Henry III of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.
On 27 Aug 1312 [his father] Arthur Capet Duke Brittany (age 51) died.
In 1319 [his brother-in-law] Peter Ivrea (age 29) died.
In 1327 [his brother-in-law] Philip Ivrea (age 35) died.
In 1328 [his wife] Isabella Ivrea Queen Consort Aragon (age 45) died.
On 02 Nov 1328 [his former brother-in-law] Louis Valois (age 10) died.
In 1329 John Capet III Duke Brittany (age 42) and Joan Savoy Duchess Brittany (age 19) were married. She by marriage Duchess Brittany 1221 Dreux. The difference in their ages was 23 years. She the daughter of Edward "Liberal" Savoy Count Savoy (age 45) and Blanche Burgundy Countess Savoy (age 41). They were second cousins. He a great grandson of King Henry III of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.
On 23 Oct 1331 [his former sister-in-law] Marie Valois (age 22) died.
In 1334 [his uncle] John Capet 4th Earl Richmond (age 68) died. His nephew John Capet III Duke Brittany (age 47) succeeded 5th Earl Richmond.
On 30 Apr 1341 John Capet III Duke Brittany (age 55) died. Earl Richmond extinct. The succession of the Duchy of Brittany was disputed between Joan "Lame" Capet Countess Penthièvre (age 22) and [his half-brother] John Montfort IV Duke Brittany (age 46) leading to the War of the Breton Succession. Joanna Dampierre Duchess Brittany (age 46) by marriage Duchess Brittany 1221 Dreux. His niece Joan "Lame" Capet Countess Penthièvre (age 22) succeeded Duchess Brittany 1221 Dreux. Charles "Saint" Chatillon Duke Brittany (age 22) by marriage Duke Brittany 1221 Dreux. His half brother John Montfort IV Duke Brittany (age 46) succeeded IV Duke Brittany 1221 Dreux.
On 29 Jun 1344 [his former wife] Joan Savoy Duchess Brittany (age 34) died.
Peter Ivrea and Maria Barcelona were married. She the daughter of James "The Just" II King Aragon and Blanche Capet Queen Consort Aragon. He the son of Sancho IV King Castile IV King Leon and Maria Molina Queen Consort Castile Queen Consort Leon. They were second cousins. He a great x 4 grandson of King Henry "Curtmantle" II of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.
Kings Wessex: Great x 8 Grand Son of King Edmund "Ironside" I of England
Kings England: Great Grand Son of King Henry III of England
Kings Scotland: Great x 6 Grand Son of Malcolm III King Scotland
Kings Franks: Great x 5 Grand Son of Louis VII King Franks
Kings France: Great x 5 Grand Son of Louis "Fat" VI King France
Great x 4 Grandfather: Robert "Great" Capet I Count Dreux
Great x 3 Grandfather: Robert Capet II Count Dreux
Great x 4 Grandmother: Agnes Baudemont Countess Dreux
Great x 2 Grandfather: Peter of Dreux aka Mauclerc Duke Brittany
Great x 4 Grandfather: Raoul Coucy
Great x 3 Grandmother: Yolande Coucy Countess Dreux
Great x 4 Grandmother: Agnes Flanders
Great x 1 Grandfather: John "The Red" Capet I Duke Brittany 4 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandfather: Geoffrey Thouars IV Viscount Thouars
Great x 3 Grandfather: Guy Thouars
Great x 4 Grandmother: Aenor Lusignan Viscountess Thouars
Great x 2 Grandmother: Alix Thouars Duchess of Brittany 3 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Conan "The Young" Penthièvre IV Duke Brittany Great Grand Son of King Henry I "Beauclerc" England
Great x 3 Grandmother: Constance Penthièvre Duchess Brittany 2 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandmother: Margaret Dunkeld Duchess Brittany
GrandFather: John Capet II Duke Brittany 5 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandfather: Henry Blois I Count Champagne Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandfather: Theobald Blois III Count Champagne 2 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandmother: Marie Capet Countess Champagne
Great x 2 Grandfather: Theobald IV King Navarre 3 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandfather: Sancho "Wise" King Navarre
Great x 3 Grandmother: Blanche Ramirez
Great x 4 Grandmother: Sancha Ivrea
Great x 1 Grandmother: Blanche "Navarre" Blois Duchess Brittany 4 x Great Grand Daughter of King William "Conqueror" I of England
Great x 3 Grandfather: Guichard IV of Beaujeu
Great x 2 Grandmother: Agnes of Beaujeu Countess Savoy
Father: Arthur Capet Duke Brittany Grand Son of King Henry III of England
Great x 4 Grandfather: Geoffrey Plantagenet Duke Normandy
Great x 3 Grandfather: King Henry "Curtmantle" II of England Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandmother: Empress Matilda Daughter of King Henry I "Beauclerc" England
Great x 2 Grandfather: King John "Lackland" of England Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: William "Saint" Poitiers X Duke Aquitaine
Great x 3 Grandmother: Eleanor of Aquitaine Queen Consort Franks and England
Great x 4 Grandmother: Aenor Chatellerault Duchess Aquitaine
Great x 1 Grandfather: King Henry III of England Son of King John "Lackland" of England
Great x 4 Grandfather: William "Taillefer" Angoulême VI Count Angoulême
Great x 3 Grandfather: Aymer Angoulême I Count Angoulême
Great x 2 Grandmother: Isabella of Angoulême Queen Consort England
Great x 4 Grandfather: Peter Courtenay
Great x 3 Grandmother: Alice Courtenay Countess Angoulême
Great x 4 Grandmother: Elizabeth Courtenay
GrandMother: Beatrice Plantagenet Daughter of King Henry III of England
Great x 4 Grandfather: Alfonso II King Aragon
Great x 3 Grandfather: Alfonso Barcelona II Count Provence
Great x 4 Grandmother: Sancha Ivrea Queen Consort Aragon
Great x 2 Grandfather: Raymond Berenguer Provence IV Count Provence
Great x 4 Grandfather: Rainou of Sabran
Great x 3 Grandmother: Gersenda II Sabran Countess Provence
Great x 1 Grandmother: Eleanor of Provence Queen Consort England
Great x 4 Grandfather: Humbert Savoy III Count Savoy
Great x 3 Grandfather: Thomas Savoy I Count Savoy
Great x 4 Grandmother: Beatrice Macon Countess Savoy
Great x 2 Grandmother: Beatrice Savoy Countess Provence
Great x 4 Grandfather: William I-Count Geneva
Great x 3 Grandmother: Margaret Geneva Countess Savoy
John Capet III Duke Brittany Great Grand Son of King Henry III of England
GrandFather: Guy IV Viscount of Limoges
Mother: Marie Limoges Duchess Brittany 6 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandfather: Odo II Duke Burgundy
Great x 3 Grandfather: Hugh III Duke Burgundy 2 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandmother: Marie Blois Duchess Burgundy Great Grand Daughter of King William "Conqueror" I of England
Great x 2 Grandfather: Odo III Duke Burgundy 3 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandfather: Matthias Metz I Duke Lorraine
Great x 3 Grandmother: Alice Metz Duchess Burgundy
Great x 4 Grandmother: Bertha aka Judith Hohenstaufen Duchess Lorraine
Great x 1 Grandfather: Hugh IV Duke Burgundy 4 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandfather: Hugues Vergy
Great x 2 Grandmother: Alice Vergy Duchess Burgundy
GrandMother: Margaret Burgundy 5 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandfather: Robert "Great" Capet I Count Dreux
Great x 3 Grandfather: Robert Capet II Count Dreux
Great x 4 Grandmother: Agnes Baudemont Countess Dreux
Great x 2 Grandfather: Robert Capet III Count Dreux
Great x 4 Grandfather: Raoul Coucy
Great x 3 Grandmother: Yolande Coucy Countess Dreux
Great x 4 Grandmother: Agnes Flanders
Great x 1 Grandmother: Yolande Capet Duchess Burgundy
Great x 4 Grandfather: Bernard St Valery
Great x 3 Grandfather: Thomas St Valery
Great x 4 Grandmother: Eleanor Donart
Great x 2 Grandmother: Aénor de Saint-Valéry
Great x 4 Grandfather: John Montgomery I Count Ponthieu
Great x 3 Grandmother: Adele Ponthieu
Great x 4 Grandmother: Beatrice St Pol Countess Ponthieu