Paternal Family Tree: Capet
Maternal Family Tree: Mathilda of Tubingen
In 1423 [his father] Richard Montfort [aged 28] and [his mother] Margaret Valois [aged 16] were married. She the daughter of [his grandfather] Louis Valois I Duke Orléans and [his grandmother] Valentina Visconti Duchess of Orleans. He the son of John Montfort V Duke Brittany and Joanna of Navarre Queen Consort England [aged 53]. They were second cousins. He a great x 3 grandson of King Henry III of England. She a great x 5 granddaughter of King Henry III of England.
On 23rd June 1433 Francis Montfort II Duke Brittany was born to Richard Montfort [aged 38] and Margaret Valois [aged 26]. He a great x 4 grandson of King Henry III of England. Coefficient of inbreeding 4.62%.
On 2nd June 1438 [his father] Richard Montfort [aged 43] died.
On 26th December 1458 Francis Montfort II Duke Brittany [aged 25] succeeded II Duke Brittany.
Before 29th June 1463 Francis Montfort II Duke Brittany [aged 30] and Margaret Montfort Duchess Brittany [aged 20] were married. She by marriage Duchess Brittany. She the daughter of Francis Montfort I Duke Brittany and Isabella Stewart Duchess Brittany [aged 37]. They were first cousin once removed. He a great x 4 grandson of King Henry III of England. She a great x 3 granddaughter of King Edward III of England.
On 29th June 1463 [his son] John Montfort was born to Francis Montfort II Duke Brittany [aged 30] and [his wife] Margaret Montfort Duchess Brittany [aged 20]. He a great x 4 grandson of King Edward III of England. Coefficient of inbreeding 5.61%. He died aged less than one years old.
On 25th August 1463 [his son] John Montfort died.
On 24th April 1466 [his mother] Margaret Valois [aged 59] died.
In 1469 [his wife] Margaret Montfort Duchess Brittany [aged 26] died.
On 27th June 1474 Francis Montfort II Duke Brittany [aged 41] and Marguerite Foix Duchess Brittany [aged 25] were married. She by marriage Duchess Brittany. She the daughter of Gaston IV Count Foix and Eleanor Trastámara Queen Consort Navarre [aged 48]. They were second cousin once removed. He a great x 4 grandson of King Henry III of England.
In 1475 Bishop Oliver King [aged 43] was sent as Ambassdor to Francis Montfort II Duke Brittany [aged 41].
On 8th September 1476 [his brother-in-law] Jean Foix Count Étampes [aged 30] and Marie Valois Viscountess Narbonne [aged 18] were married. She the daughter of [his uncle] Charles Valois Duke Orléans and Mary de la Marck Duchess Orléans. He the son of Gaston IV Count Foix and [his mother-in-law] Eleanor Trastámara Queen Consort Navarre [aged 50]. They were third cousin once removed.
On 25th January 1477 (possibly 26th) [his daughter] Anne of Brittany Queen Consort France was born to Francis Montfort II Duke Brittany [aged 43] and [his wife] Marguerite Foix Duchess Brittany [aged 28]. She married (1) before 11th October 1492 her third cousin Charles VIII King France and had issue (2) 8th January 1499 her first cousin once removed Louis XII King France, son of Charles Valois Duke Orléans and Mary de la Marck Duchess Orléans, and had issue.
In 1478 [his daughter] Isabeau Montfort was born to Francis Montfort II Duke Brittany [aged 44] and [his wife] Marguerite Foix Duchess Brittany [aged 29].
In 1478 [his brother-in-law] Jean Foix Count Étampes [aged 32] was appointed Count Étampes.
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In 1485 [his brother-in-law] Jacques Foix Count Montfort [aged 16] and Ana Peralta were married. She the daughter of Pedro Peralta Count Santisteban y Lerín. He the son of Gaston IV Count Foix and [his mother-in-law] Eleanor Trastámara Queen Consort Navarre.
On 15th May 1486 [his wife] Marguerite Foix Duchess Brittany [aged 37] died.
Kings Wessex: Great x 11 Grand Son of King Edmund "Ironside" I of England
Kings Godwinson: Great x 11 Grand Son of King Harold II of England
Kings England: Great x 4 Grand Son of King Henry III of England
Kings Scotland: Great x 9 Grand Son of King Malcolm III of Scotland
Kings France: Great Grand Son of King Charles V of France
Kings Duke Aquitaine: Great x 15 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 7 Grand Son of Alfonso II King Aragon
Great x 4 Grandfather: John "The Red" Capet I Duke Brittany 
3 x Great Grandson of King David I of Scotland
Great x 3 Grandfather: John II Duke Brittany 3 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandmother: Blanche "Navarre" Blois Duchess Brittany 
2 x Great Granddaughter of Alfonso VII King Castile VII King Leon
Great x 2 Grandfather: Arthur II Duke Brittany Grandson of King Henry III of England
Great x 4 Grandfather: King Henry III of England 
son of King John of England
Great x 3 Grandmother: Beatrice Plantagenet daughter of King Henry III of England
Great x 4 Grandmother: Eleanor of Provence Queen Consort England 
Great Granddaughter of Alfonso II King Aragon
Great x 1 Grandfather: John Montfort IV Duke Brittany Great Grandson of King Henry III of England
Great x 4 Grandfather: John Capet I Count Dreux 6 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandfather: Robert Capet IV Count Dreux 7 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandmother: Marie Dampierre Countess Dreux 
Great x 2 Grandmother: Yolande of Dreux Queen of Scotland 5 x Great Granddaughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Jean Montfort 3 x Great Grandson of King Henry I "Beauclerc" England
Great x 3 Grandmother: Beatrice Montfort Countess Dreux 4 x Great Granddaughter of King Henry I "Beauclerc" England
Great x 4 Grandmother: Jeanne Chateaudun
Grandfather: John Montfort V Duke Brittany 2 x Great Grandson of King Henry III of England
Great x 4 Grandfather: Guy Dampierre Count Flanders 4 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandfather: Robert Dampierre III Count Flanders 5 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandmother: Mathilde Bethune
Great x 2 Grandfather: Louis Dampierre I Count Nevers 6 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandfather: Odo Burgundy 5 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandmother: Yolande Burgundy II Countess Nevers and Flanders 6 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandmother: Matilda Countess of Auxerre
Great x 1 Grandmother: Joanna of Flanders Duchess Brittany 7 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandfather: Manasses V Count Rethel 9 x Great Grandson of King Edward "Elder" of the Anglo Saxons
Great x 3 Grandfather: Hugh IV Count Rethel 10 x Great Grandson of King Edward "Elder" of the Anglo Saxons
Great x 2 Grandmother: Joan Rethel Countess Nevers and Rethel 11 x Great Granddaughter of King Edward "Elder" of the Anglo Saxons
father: Richard Montfort Great Grandson of King John "The Good" II of France
Great x 4 Grandfather: King Philip III of France son of King Louis IX of France
Great x 3 Grandfather: Louis I Count Évreux son of King Philip III of France
Great x 4 Grandmother: Maria of Brabant Queen Consort France 3 x Great Granddaughter of King Stephen I England
Great x 2 Grandfather: Philip "Noble" III King Navarre Grandson of King Philip III of France
Great x 4 Grandfather: Philip Artois Great Grandson of King Louis VIII of France
Great x 3 Grandmother: Margaret Artois Countess Évreux Great Granddaughter of King Henry III of England
Great x 4 Grandmother: Blanche Capet Granddaughter of King Henry III of England
Great x 1 Grandfather: Charles "Bad" II King Navarre Grandson of Louis X King France I Navarre
Great x 4 Grandfather: King Philip IV of France son of King Philip III of France
Great x 3 Grandfather: Louis X King France I Navarre son of King Philip IV of France
Great x 4 Grandmother: Joan Blois I Queen Navarre Great Granddaughter of King Louis VIII of France
Great x 2 Grandmother: Joan Capet II Queen Navarre daughter of Louis X King France I Navarre
Great x 4 Grandfather: Robert II Duke Burgundy 5 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandmother: Margaret of Burgundy Queen Consort France Granddaughter of King Louis IX of France
Great x 4 Grandmother: Agnes Capet Duchess Burgundy daughter of King Louis IX of France
Grandmother: Joanna of Navarre Queen Consort England Granddaughter of King John "The Good" II of France
Great x 4 Grandfather: Charles Valois I Count Valois son of King Philip III of France
Great x 3 Grandfather: King Philip "Fortunate" VI of France Grandson of King Philip III of France
Great x 4 Grandmother: Margaret Capet Countess Valois Great Granddaughter of King Louis VIII of France
Great x 2 Grandfather: King John "The Good" II of France son of King Philip "Fortunate" VI of France
Great x 4 Grandfather: Robert II Duke Burgundy 5 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandmother: Joan "Lame" Burgundy Queen Consort France Granddaughter of King Louis IX of France
Great x 4 Grandmother: Agnes Capet Duchess Burgundy daughter of King Louis IX of France
Great x 1 Grandmother: Joan Valois Queen Consort Navarre daughter of King John "The Good" II of France
Great x 4 Grandfather: Henry Luxemburg VII Holy Roman Emperor 
5 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandfather: King John I of Bohemia 6 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandmother: Margaret Brabant Countess Luxemburg and Namur
Great x 2 Grandmother: Bonne Luxemburg Queen Consort France 7 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandfather: King Wenceslaus II of Bohemia and Poland 6 x Great Grandson of King Harold II of England
Great x 3 Grandmother: Queen Elizabeth of Bohemia 7 x Great Granddaughter of King Harold II of England
Great x 4 Grandmother: Queen Judith of Bohemia and Poland 12 x Great Granddaughter of King Alfred "The Great" of Wessex
Francis Montfort II Duke Brittany Great Grandson of King Charles V of France
Great x 4 Grandfather: Charles Valois I Count Valois son of King Philip III of France
Great x 3 Grandfather: King Philip "Fortunate" VI of France Grandson of King Philip III of France
Great x 4 Grandmother: Margaret Capet Countess Valois Great Granddaughter of King Louis VIII of France
Great x 2 Grandfather: King John "The Good" II of France son of King Philip "Fortunate" VI of France
Great x 4 Grandfather: Robert II Duke Burgundy 5 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandmother: Joan "Lame" Burgundy Queen Consort France Granddaughter of King Louis IX of France
Great x 4 Grandmother: Agnes Capet Duchess Burgundy daughter of King Louis IX of France
Great x 1 Grandfather: King Charles V of France son of King John "The Good" II of France
Great x 4 Grandfather: Henry Luxemburg VII Holy Roman Emperor 5 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandfather: King John I of Bohemia 6 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandmother: Margaret Brabant Countess Luxemburg and Namur
Great x 2 Grandmother: Bonne Luxemburg Queen Consort France 7 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandfather: King Wenceslaus II of Bohemia and Poland 6 x Great Grandson of King Harold II of England
Great x 3 Grandmother: Queen Elizabeth of Bohemia 7 x Great Granddaughter of King Harold II of England
Great x 4 Grandmother: Queen Judith of Bohemia and Poland 12 x Great Granddaughter of King Alfred "The Great" of Wessex
Grandfather: Louis Valois I Duke Orléans son of King Charles V of France
Great x 4 Grandfather: Robert Bourbon 1st Count Clermont son of King Louis IX of France
Great x 3 Grandfather: Louis Bourbon I Duke Bourbon Grandson of King Louis IX of France
Great x 4 Grandmother: Beatrice Burgundy 6 x Great Granddaughter of King William "Conqueror" I of England
Great x 2 Grandfather: Peter Bourbon Duke Bourbon Great Grandson of King Louis IX of France
Great x 4 Grandfather: John of Avesnes II Count Hainaut II Count Holland 3 x Great Grandson of King Stephen I England
Great x 3 Grandmother: Mary Hainaut Duchess Bourbon 4 x Great Granddaughter of King Stephen I England
Great x 4 Grandmother: Philippa Luxemburg Countess Hainaut and Holland 5 x Great Granddaughter of King William "Conqueror" I of England
Great x 1 Grandmother: Joanna Bourbon Queen Consort France Great Granddaughter of King Philip III of France
Great x 4 Grandfather: King Philip III of France son of King Louis IX of France
Great x 3 Grandfather: Charles Valois I Count Valois son of King Philip III of France
Great x 4 Grandmother: Isabella Barcelona Queen Consort France Great Granddaughter of Alfonso II King Aragon
Great x 2 Grandmother: Isabella Valois Duchess Bourbon Granddaughter of King Philip III of France
Great x 4 Grandfather: Guy Chatillon IV Count Saint Pol 3 x Great Grandson of King Stephen I England
Great x 3 Grandmother: Mahaut Chatillon Countess Valois Great Granddaughter of King Henry III of England
Great x 4 Grandmother: Marie Capet Granddaughter of King Henry III of England
mother: Margaret Valois Granddaughter of King Charles V of France
Great x 4 Grandfather: Matteo I Visconti
Great x 3 Grandfather: Stephano Visconti
Great x 4 Grandmother: Bonacossa Borri
Great x 2 Grandfather: Galeazzo II Visconti
Great x 3 Grandmother: Valentina Doria
Great x 1 Grandfather: Gian Galeazzo Visconti 1st Duke Milan 17 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandfather: Amadeus V "Great" Savoy 14 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 3 Grandfather: Aymon "Peaceful" Savoy Count Savoy 15 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Sybille Bagé
Great x 2 Grandmother: Bianca Savoy 16 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 3 Grandmother: Yolande Palaeologina Countess Savoy
Grandmother: Valentina Visconti Duchess of Orleans Granddaughter of King John "The Good" II of France
Great x 4 Grandfather: Charles Valois I Count Valois son of King Philip III of France
Great x 3 Grandfather: King Philip "Fortunate" VI of France Grandson of King Philip III of France
Great x 4 Grandmother: Margaret Capet Countess Valois Great Granddaughter of King Louis VIII of France
Great x 2 Grandfather: King John "The Good" II of France son of King Philip "Fortunate" VI of France
Great x 4 Grandfather: Robert II Duke Burgundy 5 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandmother: Joan "Lame" Burgundy Queen Consort France Granddaughter of King Louis IX of France
Great x 4 Grandmother: Agnes Capet Duchess Burgundy daughter of King Louis IX of France
Great x 1 Grandmother: Isabelle Valois daughter of King John "The Good" II of France
Great x 4 Grandfather: Henry Luxemburg VII Holy Roman Emperor 5 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandfather: King John I of Bohemia 6 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandmother: Margaret Brabant Countess Luxemburg and Namur
Great x 2 Grandmother: Bonne Luxemburg Queen Consort France 7 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandfather: King Wenceslaus II of Bohemia and Poland 6 x Great Grandson of King Harold II of England
Great x 3 Grandmother: Queen Elizabeth of Bohemia 7 x Great Granddaughter of King Harold II of England
Great x 4 Grandmother: Queen Judith of Bohemia and Poland 12 x Great Granddaughter of King Alfred "The Great" of Wessex