Paternal Family Tree: Blois
In 1222 [his father] Theobald IV King Navarre [aged 20] and Agnes of Beaujeu Countess Savoy were married. She by marriage Countess Champagne.
After 11th July 1231 [his father] Theobald IV King Navarre [aged 30] and [his mother] Margaret Bourbon Queen Consort Navarre [aged 14] were married. She by marriage Countess Champagne.
On 06 or 7th December 1239 Theobald "Young" II King Navarre was born to Theobald IV King Navarre [aged 38] and Margaret Bourbon Queen Consort Navarre [aged 22]. He a great x 4 grandson of King William "Conqueror" I of England.
On 8th July 1253 [his father] Theobald IV King Navarre [aged 52] died. His son Theobald [aged 13] succeeded V Count Champagne, II King Navarre.
On 6th April 1255 Theobald "Young" II King Navarre [aged 15] and Isabella Capet [aged 14] were married. She the daughter of King Louis IX of France [aged 40] and Margaret Provence Queen Consort France [aged 34]. He the son of Theobald IV King Navarre and Margaret Bourbon Queen Consort Navarre [aged 38]. They were half third cousins. He a great x 4 grandson of King William "Conqueror" I of England. She a great x 2 granddaughter of King Henry "Curtmantle" II of England.
On 12th April 1256 [his mother] Margaret Bourbon Queen Consort Navarre [aged 39] died.
Around 1258 [his brother-in-law] Hugh IV Duke Burgundy [aged 44] and [his sister] Beatrix Blois Duchess Burgundy [aged 16] were married. She by marriage Duchess Burgundy. The difference in their ages was 28 years. She the daughter of [his father] Theobald IV King Navarre and [his mother] Margaret Bourbon Queen Consort Navarre. He the son of Odo III Duke Burgundy and Alice Vergy Duchess Burgundy. They were third cousins. He a great x 4 grandson of King William "Conqueror" I of England. She a great x 4 granddaughter of King William "Conqueror" I of England.
On 28th May 1262 [his brother-in-law] King Philip III of France [aged 17] and Isabella Barcelona Queen Consort France [aged 14] were married. She the daughter of James I King Aragon [aged 54] and Violant Árpád Queen Consort Aragon. He the son of [his father-in-law] King Louis IX of France [aged 48] and [his mother-in-law] Margaret Provence Queen Consort France [aged 41]. They were second cousin once removed. He a great x 2 grandson of King Henry "Curtmantle" II of England.
In 1268 [his brother-in-law] Robert Bourbon 1st Count Clermont [aged 12] was created 1st Count Clermont.
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In 1269 [his brother] Henry I King Navarre [aged 25] and [his sister-in-law] Blanche Capet Queen Navarre [aged 21] were married. She the daughter of Robert Capet Count of Artois and Matilda Reginar Countess Saint Pol [aged 45]. He the son of [his father] Theobald IV King Navarre and [his mother] Margaret Bourbon Queen Consort Navarre. They were half third cousins. He a great x 4 grandson of King William "Conqueror" I of England. She a great x 2 granddaughter of King Henry "Curtmantle" II of England.
In 1269 [his brother-in-law] Peter Capet Count Alençon [aged 18] was created Count Alençon.
In July 1270 [his father-in-law] King Louis IX of France [aged 56] with Theobald "Young" II King Navarre [aged 30] travelled to Tunis [Map] to commence the Eighth Crusade.
On 3rd August 1270 [his brother-in-law] John Tristan Capet Count Valois [aged 20] died.
On 25th August 1270 [his father-in-law] King Louis IX of France [aged 56] died. His son [his brother-in-law] Philip [aged 25] succeeded III King France: Capet. Isabella Barcelona Queen Consort France [aged 22] by marriage Queen Consort France.
On 04 or 5th December 1270 Theobald "Young" II King Navarre [aged 30] died at Trapani returning from the Eighth Crusade. His brother Henry [aged 26] succeeded I King Navarre, III Count Champagne. Blanche Capet Queen Navarre [aged 22] by marriage Queen Navarre, Countess Champagne.
On 28th January 1271 [his former wife] Isabella Capet [aged 29] died.
Kings Wessex: Great x 10 Grand Son of King Edward "Elder" of the Anglo Saxons
Kings England: Great x 4 Grand Son of King William "Conqueror" I of England
Kings France: Great x 7 Grand Son of Hugh I King of the Franks
Kings Duke Aquitaine: Great x 11 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 2 Grand Son of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Theobald Blois III Count Blois 
4 x Great Grandson of King Edward "Elder" of the Anglo Saxons
Great x 3 Grandfather: Stephen Blois II Count Blois and Chartres 5 x Great Grandson of King Edward "Elder" of the Anglo Saxons
Great x 4 Grandmother: Gersenda Maine Countess Blois 6 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 2 Grandfather: Theobald Blois II Count Champagne IV Count Blois Grandson of King William "Conqueror" I of England
Great x 4 Grandfather: King William "Conqueror" I of England 
-2 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandmother: Adela Normandy Countess Blois daughter of King William "Conqueror" I of England
Great x 4 Grandmother: Matilda Flanders Queen Consort England Great Granddaughter of Hugh I King of the Franks
Great x 1 Grandfather: Henry Blois I Count Champagne Great Grandson of King William "Conqueror" I of England
Great x 3 Grandfather: Engelbert II Duke of Carinthia
Great x 2 Grandmother: Matilda Carinthia Countess Champagne and Blois
Grandfather: Theobald Blois III Count Champagne 2 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandfather: Philip I King of the Franks 
Great Grandson of Hugh I King of the Franks
Great x 3 Grandfather: Louis VI King of the Franks 2 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandmother: Bertha Gerulfing Queen Consort France 
5 x Great Granddaughter of King Alfred "The Great" of Wessex
Great x 2 Grandfather: Louis VII King of the Franks 3 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandfather: Humbert "Fat" Savoy II Count Savoy
Great x 3 Grandmother: Adelaide Savoy Queen Consort France 10 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Gisela Ivrea Countess Savoy 
9 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 1 Grandmother: Marie Capet Countess Champagne 4 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandfather: William "Troubadour" Poitiers IX Duke Aquitaine 2 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandfather: William "Saint" Poitiers X Duke Aquitaine 3 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandmother: Philippa Rouerge Duchess Aquitaine
Great x 2 Grandmother: Eleanor of Aquitaine Queen Consort Franks and England 4 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandfather: Aimery Chatellerault Viscount Châtellerault
Great x 3 Grandmother: Aenor Chatellerault Duchess Aquitaine
Great x 4 Grandmother: Dangereuse Ile Bouchard Viscountess Chatellerault
Father: Theobald IV King Navarre Great Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Sancho Jiménez
Great x 3 Grandfather: Ramiro Jiménez
Great x 4 Grandmother: Constanza Unknown
Great x 2 Grandfather: García "Restorer" IV King Navarre
Great x 4 Grandfather: Rodrigo Díaz Vivar
Great x 3 Grandmother: Cristina Rodríguez Vivar
Great x 1 Grandfather: Sancho "Wise" King Navarre
Great x 4 Grandfather: Engenulphe Aigle
Great x 3 Grandfather: Gilbert Aigle Lord Aigle
Great x 4 Grandmother: Richvaride Unknown
Great x 2 Grandmother: Marguerite Aigle Queen Consort Navarre
Great x 4 Grandfather: Geoffrey Chateaudun II Count Mortain III Count Perche
Great x 3 Grandmother: Juliette du Perche Chateaudun
Great x 4 Grandmother: Beatrix de Ramerupt Montdidier Countess Mortain and Perche
Grandmother: Blanche Ramirez Granddaughter of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: William I Count Burgundy 8 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 3 Grandfather: Raymond Ivrea 9 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Ettiennette Countess Burgundy
Great x 2 Grandfather: Alfonso VII King Castile VII King Leon -2 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Alfonso "Brave" VI King Leon VI King Castile
Great x 3 Grandmother: Urracca "Reckless" Jiménez Queen Consort Aragon and Pamplona 2 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Constance Burgundy Queen Consort Castile and Leon Great Granddaughter of Hugh I King of the Franks
Great x 1 Grandmother: Sancha Ivrea daughter of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Ramon Berenguer "Towhead" Barcelona II Count Barcelona
Great x 3 Grandfather: Raymond III Count Barcelona
Great x 2 Grandmother: Berenguela Barcelona Queen Consort Castile and Leon 11 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandfather: Gilbert Gevaudan
Great x 3 Grandmother: Douce Gevaudan Countess Barcelona 10 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Gerberga Arles 9 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Theobald "Young" II King Navarre 2 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Thibaut Dampierre 
Great x 3 Grandfather: Guy Dampierre
Great x 4 Grandmother: Isabel Montlhéry
Great x 2 Grandfather: William Dampierre
Great x 4 Grandfather: Andre Baudémont
Great x 3 Grandmother: Helvide Baudémont
Great x 1 Grandfather: Guy Dampierre
Grandfather: Archambaud "Great" Dampierre
Great x 2 Grandfather: Archambaud Bouron
Great x 1 Grandmother: Mathilde Bouron
Mother: Margaret Bourbon Queen Consort Navarre
Grandmother: Alix Forez