Paternal Family Tree: Capet
Maternal Family Tree: Beatrice of Albon Duchess Burgundy 1161-1228
In 1282 [his father] Denis I King Portugal [aged 20] and [his mother] Elisabeth Barcelona Queen Consort Portugal [aged 11] were married. She by marriage Queen Consort Portugal. She the daughter of [his grandfather] Peter III King Aragon [aged 42] and [his grandmother] Constance Hohenstaufen Queen Consort Aragon [aged 33]. He the son of Alfonso III King Portugal and Beatrice Queen Consort Portugal [aged 40]. They were half third cousin once removed. He a great x 2 grandson of King Henry "Curtmantle" II of England.
On 8th February 1291 Alfonso "Brave" IV King Portugal was born to Denis I King Portugal [aged 29] and Elisabeth Barcelona Queen Consort Portugal [aged 20]. He a great x 3 grandson of King Henry "Curtmantle" II of England.
On 23rd January 1302 [his brother-in-law] Ferdinand IV King Castile IV King Leon [aged 16] and [his sister] Constance Burgundy Queen Consort Castile Queen Consort Leon [aged 12] were married. She by marriage Queen Consort Castile, Queen Consort Leon. She the daughter of [his father] Denis I King Portugal [aged 40] and [his mother] Elisabeth Barcelona Queen Consort Portugal [aged 31]. He the son of Sancho IV King Castile IV King Leon and Maria Molina Queen Consort Castile Queen Consort Leon. They were half first cousin once removed. He a great x 4 grandson of King Henry "Curtmantle" II of England. She a great x 3 granddaughter of King Henry "Curtmantle" II of England.
On 12th September 1309 Alfonso "Brave" IV King Portugal [aged 18] and Beatrice Ivrea Queen Consort Portugal [aged 16] were married. She the daughter of Sancho IV King Castile IV King Leon and Maria Molina Queen Consort Castile Queen Consort Leon. He the son of Denis I King Portugal [aged 47] and Elisabeth Barcelona Queen Consort Portugal [aged 38]. They were half first cousin once removed. He a great x 3 grandson of King Henry "Curtmantle" II of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.
In 1310 John III Duke Brittany [aged 23] and [his sister-in-law] Isabella of Castile Queen Consort Aragon [aged 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. They were fourth cousin once removed. He a great grandson of King Henry III of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.
In 1313 [his daughter] Maria Burgundy Queen Consort Castile was born to Alfonso "Brave" IV King Portugal [aged 21] and [his wife] Beatrice Ivrea Queen Consort Portugal [aged 20]. She a great x 4 granddaughter of King Henry "Curtmantle" II of England. Coefficient of inbreeding 3.61%. She married 1328 her double first cousin Alfonso "Avenger" XI King Castile, son of Ferdinand IV King Castile IV King Leon and Constance Burgundy Queen Consort Castile Queen Consort Leon, and had issue.
On 18th November 1313 [his sister] Constance Burgundy Queen Consort Castile Queen Consort Leon [aged 23] died.
In 1315 [his son] Alfonso Burgundy was born to Alfonso "Brave" IV King Portugal [aged 23] and [his wife] Beatrice Ivrea Queen Consort Portugal [aged 22]. He a great x 4 grandson of King Henry "Curtmantle" II of England. Coefficient of inbreeding 3.61%. He died aged two in 1317.
In 1317 [his son] Alfonso Burgundy [aged 2] died.
The Deeds of the Dukes of Normandy
The Gesta Normannorum Ducum [The Deeds of the Dukes of Normandy] is a landmark medieval chronicle tracing the rise and fall of the Norman dynasty from its early roots through the pivotal events surrounding the Norman Conquest of England. Originally penned in Latin by the monk William of Jumièges shortly before 1060 and later expanded at the behest of William the Conqueror, the work chronicles the deeds, politics, battles, and leadership of the Norman dukes, especially William’s own claim to the English throne. The narrative combines earlier historical sources with firsthand information and oral testimony to present an authoritative account of Normandy’s transformation from a Viking settlement into one of medieval Europe’s most powerful realms. William’s history emphasizes the legitimacy, military prowess, and governance of the Norman line, framing their expansion, including the conquest of England, as both divinely sanctioned and noble in purpose. Later chroniclers such as Orderic Vitalis and Robert of Torigni continued the history, extending the coverage into the 12th century, providing broader context on ducal rule and its impact. Today this classic work remains a foundational source for understanding Norman identity, medieval statesmanship, and the historical forces that reshaped England and Western Europe between 800AD and 1100AD.
Available at Amazon in eBook and Paperback format.
On 12th February 1317 [his son] Denis Burgundy was born to Alfonso "Brave" IV King Portugal [aged 26] and [his wife] Beatrice Ivrea Queen Consort Portugal [aged 24]. He a great x 4 grandson of King Henry "Curtmantle" II of England. Coefficient of inbreeding 3.61%. He died aged less than one years old.
Around May 1317 [his son] Denis Burgundy died.
On 8th April 1320 [his son] Peter I King Portugal was born to Alfonso "Brave" IV King Portugal [aged 29] and [his wife] Beatrice Ivrea Queen Consort Portugal [aged 27]. He a great x 4 grandson of King Henry "Curtmantle" II of England. Coefficient of inbreeding 3.61%. He married (1) 24th August 1340 his second cousin Constanza Manuel Queen Consort Castile, daughter of Juan Manuel Prince of Villena and Constance Barcelona, and had issue (2) in or before 1350 Inês Castro and had issue.
On 7th January 1325 [his father] Denis I King Portugal [aged 63] died. His son Alfonso [aged 33] succeeded IV King Portugal. [his wife] Beatrice Ivrea Queen Consort Portugal [aged 32] by marriage Queen Consort Portugal.
In 1326 [his son] John Burgundy was born to Alfonso "Brave" IV King Portugal [aged 34] and [his wife] Beatrice Ivrea Queen Consort Portugal [aged 33]. He a great x 4 grandson of King Henry "Curtmantle" II of England. Coefficient of inbreeding 3.61%.
In 1328 [his son-in-law] Alfonso "Avenger" XI King Castile [aged 16] and Maria Burgundy Queen Consort Castile [aged 15] were married. She by marriage Queen Consort Castile. She the daughter of Alfonso "Brave" IV King Portugal [aged 36] and Beatrice Ivrea Queen Consort Portugal [aged 35]. He the son of Ferdinand IV King Castile IV King Leon and Constance Burgundy Queen Consort Castile Queen Consort Leon. They were double first 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.
In 1328 [his daughter] Eleanor Burgundy Queen Consort Aragon was born to Alfonso "Brave" IV King Portugal [aged 36] and [his wife] Beatrice Ivrea Queen Consort Portugal [aged 35]. She a great x 4 granddaughter of King Henry "Curtmantle" II of England. Coefficient of inbreeding 3.61%. She married 15th November 1347 her second cousin Peter IV King Aragon, son of Alfonso IV King Aragon and Teresa Enteca Queen Consort Aragon.
In 1328 [his sister-in-law] Isabella of Castile Queen Consort Aragon [aged 45] died.
On 4th July 1336 [his mother] Elisabeth Barcelona Queen Consort Portugal [aged 65] died.
On 24th August 1340 Peter I King Portugal [aged 20] and Constanza Manuel Queen Consort Castile [aged 24] were married. She by marriage Queen Consort Portugal. He the son of Alfonso "Brave" IV King Portugal [aged 49] and Beatrice Ivrea Queen Consort Portugal [aged 47]. 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.
The Deeds of the Dukes of Normandy
The Gesta Normannorum Ducum [The Deeds of the Dukes of Normandy] is a landmark medieval chronicle tracing the rise and fall of the Norman dynasty from its early roots through the pivotal events surrounding the Norman Conquest of England. Originally penned in Latin by the monk William of Jumièges shortly before 1060 and later expanded at the behest of William the Conqueror, the work chronicles the deeds, politics, battles, and leadership of the Norman dukes, especially William’s own claim to the English throne. The narrative combines earlier historical sources with firsthand information and oral testimony to present an authoritative account of Normandy’s transformation from a Viking settlement into one of medieval Europe’s most powerful realms. William’s history emphasizes the legitimacy, military prowess, and governance of the Norman line, framing their expansion, including the conquest of England, as both divinely sanctioned and noble in purpose. Later chroniclers such as Orderic Vitalis and Robert of Torigni continued the history, extending the coverage into the 12th century, providing broader context on ducal rule and its impact. Today this classic work remains a foundational source for understanding Norman identity, medieval statesmanship, and the historical forces that reshaped England and Western Europe between 800AD and 1100AD.
Available at Amazon in eBook and Paperback format.
On 15th November 1347 [his son-in-law] Peter IV King Aragon [aged 28] and Eleanor Burgundy Queen Consort Aragon [aged 19] were married. She by marriage Queen Consort Aragon. She the daughter of Alfonso "Brave" IV King Portugal [aged 56] and Beatrice Ivrea Queen Consort Portugal [aged 54]. He the son of Alfonso IV King Aragon and Teresa Enteca Queen Consort Aragon. They were second cousins. He a great x 5 grandson of King Henry "Curtmantle" II of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.
In 1348 [his son] John Burgundy [aged 22] died.
On 30th October 1348 [his daughter] Eleanor Burgundy Queen Consort Aragon [aged 20] died of plague. See Masearo, Condes de Barcelona, Volume 2, p. 274.
In or before 1350 Peter I King Portugal [aged 29] and Inês Castro [aged 24] were married. She by marriage Queen Consort Portugal. There is some uncertainty as to whether they were married. He announced their marriage in 1357 after he succeeded, and after her death, thereby ensuring their children were legitimate. He the son of Alfonso "Brave" IV King Portugal [aged 58] and Beatrice Ivrea Queen Consort Portugal [aged 56].
On 7th January 1355 [his daughter-in-law] Inês Castro [aged 30] was murdered on the orders of her [his son] husband's [aged 34] father Alfonso "Brave" IV King Portugal [aged 63] who didn't approve of their marriage, or relationship. He, Peter, subsequently captured two of the murderers and had them executed.
On 18th January 1357 [his daughter] Maria Burgundy Queen Consort Castile [aged 44] died.
On 28th May 1357 Alfonso "Brave" IV King Portugal [aged 66] died. His son Peter [aged 37] succeeded I King Portugal.
In 1359 [his former wife] Beatrice Ivrea Queen Consort Portugal [aged 66] died.
Kings Wessex: Great x 8 Grand Son of King Edmund "Ironside" I of England
Kings Godwinson: Great x 7 Grand Son of King Harold II of England
Kings England: Great x 3 Grand Son of King Henry "Curtmantle" II of England
Kings Scotland: Great x 6 Grand Son of King Malcolm III of Scotland
Kings France: Great x 8 Grand Son of Hugh I King of the Franks
Kings Duke Aquitaine: Great x 12 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 3 Grand Son of Alfonso II King Aragon
Great x 4 Grandfather: Henry Burgundy Count Portugal 
2 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandfather: Afonso "Conqueror Founder Great" I King Portugal 
3 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandmother: Teresa Alfónsez Jiménez
Great x 2 Grandfather: Sancho "Populator" I King Portugal 4 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandfather: Amadeus Savoy III Count Savoy 10 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 3 Grandmother: Malfada Savoy Queen Consort Portugal 11 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Mahaut Albon Countess Savoy
Great x 1 Grandfather: Alfonso "Fat" II King Portugal 5 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandfather: Raymond III Count Barcelona
Great x 3 Grandfather: Raymond V Count Barcelona 
11 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 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 2 Grandmother: Dulce Barcelona Queen Consort Portugal 12 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Grandfather: Alfonso III King Portugal 
Great Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Alfonso VII King Castile VII King Leon 
-2 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandfather: Sancho III King Castile son of Alfonso VII King Castile VII King Leon
Great x 4 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 2 Grandfather: Alfonso VIII King Castile Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: García "Restorer" IV King Navarre
Great x 3 Grandmother: Blanche Ramirez Queen Consort Castile
Great x 4 Grandmother: Marguerite Aigle Queen Consort Navarre
Great x 1 Grandmother: Urraca Ivrea Queen Consort Portugal Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Geoffrey Plantagenet Duke Normandy 
9 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 3 Grandfather: King Henry "Curtmantle" II of England Grandson of King Henry I "Beauclerc" England
Great x 4 Grandmother: Empress Matilda 
daughter of King Henry I "Beauclerc" England
Great x 2 Grandmother: Eleanor Plantagenet Queen Consort Castile daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: William "Saint" Poitiers X Duke Aquitaine 3 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandmother: Eleanor of Aquitaine Queen Consort Franks and England 4 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Aenor Chatellerault Duchess Aquitaine
father: Denis I King Portugal 2 x Great Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Ferdinand II King Leon son of Alfonso VII King Castile VII King Leon
Great x 3 Grandfather: Alfonso IX King Leon Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandmother: Urraca Burgundy Queen Consort Leon 4 x Great Granddaughter of Hugh I King of the Franks
Great x 2 Grandfather: Ferdinand III King Castile III King Leon Great Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Alfonso VIII King Castile Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandmother: Berengaria Ivrea I Queen Castile Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Eleanor Plantagenet Queen Consort Castile daughter of King Henry "Curtmantle" II of England
Great x 1 Grandfather: Alfonso X King Castile X King Leon 2 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Frederick "Barbarossa" Hohenstaufen I Holy Roman Emperor 
7 x Great Grandson of King Alfred "The Great" of Wessex
Great x 3 Grandfather: Philip King Germany 8 x Great Grandson of King Alfred "The Great" of Wessex
Great x 4 Grandmother: Beatrice of Burgundy Holy Roman Empress 7 x Great Granddaughter of King Edward "Elder" of the Anglo Saxons
Great x 2 Grandmother: Elisabeth Hohenstaufen Queen Consort Castile Queen Consort Leon 9 x Great Granddaughter of King Alfred "The Great" of Wessex
Grandmother: Beatrice Queen Consort Portugal 3 x Great Granddaughter of Alfonso VII King Castile VII King Leon
Great x 1 Grandmother: Mayor Guillén de Guzmán
Alfonso "Brave" IV King Portugal 3 x Great Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Raymond V Count Barcelona 11 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 3 Grandfather: Alfonso II King Aragon -2 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Petronilla Jiménez Queen Aragon 4 x Great Granddaughter of Hugh I King of the Franks
Great x 2 Grandfather: Peter II King Aragon son of Alfonso II King Aragon
Great x 4 Grandfather: Alfonso VII King Castile VII King Leon -2 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandmother: Sancha Ivrea Queen Consort Aragon daughter of Alfonso VII King Castile VII King Leon
Great x 4 Grandmother: Richeza Unknown Queen Consort Castile Queen Consort Leon
Great x 1 Grandfather: James I King Aragon Grandson of Alfonso II King Aragon
Great x 2 Grandmother: Marie Montpellier Queen Consort Aragon
Grandfather: Peter III King Aragon Great Grandson of Alfonso II King Aragon
Great x 4 Grandfather: King Géza II of Hungary
Great x 3 Grandfather: King Béla III of Hungary 2 x Great Grandson of King Harold II of England
Great x 4 Grandmother: Euphrosyne of Kiev Great Granddaughter of King Harold II of England
Great x 2 Grandfather: King Andrew II of Hungary 3 x Great Grandson of King Harold II of England
Great x 4 Grandfather: Raynald of Châtillon
Great x 3 Grandmother: Agnes of Antioch 5 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Princess Constance of Antioch 4 x Great Granddaughter of Hugh I King of the Franks
Great x 1 Grandmother: Violant Árpád Queen Consort Aragon 4 x Great Granddaughter of King Harold II of England
mother: Elisabeth Barcelona Queen Consort Portugal 2 x Great Granddaughter of Alfonso II King Aragon
Great x 4 Grandfather: Frederick "Barbarossa" Hohenstaufen I Holy Roman Emperor 7 x Great Grandson of King Alfred "The Great" of Wessex
Great x 3 Grandfather: Henry Hohenstaufen VI Holy Roman Emperor 8 x Great Grandson of King Alfred "The Great" of Wessex
Great x 4 Grandmother: Beatrice of Burgundy Holy Roman Empress 7 x Great Granddaughter of King Edward "Elder" of the Anglo Saxons
Great x 2 Grandfather: Frederick I King Jerusalem II Holy Roman Emperor 9 x Great Grandson of King Alfred "The Great" of Wessex
Great x 1 Grandfather: Manfred King Sicily 10 x Great Grandson of King Alfred "The Great" of Wessex
Great x 2 Grandmother: Bianca Lancia
Grandmother: Constance Hohenstaufen Queen Consort Aragon 5 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandfather: Humbert Savoy III Count Savoy 11 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 3 Grandfather: Thomas Savoy I Count Savoy 12 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Beatrice Macon Countess Savoy
Great x 2 Grandfather: Amedeo Savoy IV Count Savoy 13 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandfather: William I Count Geneva
Great x 3 Grandmother: Margaret Geneva Countess Savoy
Great x 1 Grandmother: Beatrice Savoy Marchioness of Saluzzo 4 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandfather: Odo II Duke Burgundy 4 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandfather: Hugh III Duke Burgundy 2 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandmother: Marie Blois Duchess Burgundy 
Great Granddaughter of King William "Conqueror" I of England
Great x 2 Grandmother: Margaret Burgundy Countess Savoy 3 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandfather: Guigues V Count of Albon and Grenoble
Great x 3 Grandmother: Beatrice of Albon Duchess Burgundy