Paternal Family Tree: Ivrea
Maternal Family Tree: Inês Castro 1325-1355
In 1440 [her father] Henry IV King Castile [aged 14] and [her step-mother] Blanche Trastámara II Queen Navarre [aged 16] were married. She the daughter of John II King Aragon [aged 41] and Blanche Évreux Queen Consort Aragon [aged 52]. He the son of [her grandfather] John II King Castile [aged 34] and [her grandmother] Maria Trastámara Queen Consort Castile [aged 44]. They were first cousins. He a great x 2 grandson of King Edward III of England.
In 1447 [her uncle] Alfonso "The African" V King Portugal [aged 14] and Isabella Aviz Queen Consort Portugal [aged 15] were married. She by marriage Queen Consort Portugal. He the son of [her grandfather] Edward "The Philosopher" I King Portugal and [her grandmother] Eleanor Trastámara Queen Consort Portugal. They were first cousins. He a great x 2 grandson of King Edward III of England. She a great x 2 granddaughter of King Edward III of England.
In 1455 [her father] Henry IV King Castile [aged 29] and [her mother] Joan Aviz Queen Consort Castile [aged 15] were married. She by marriage Queen Consort Castile. She the daughter of [her grandfather] Edward "The Philosopher" I King Portugal and [her grandmother] Eleanor Trastámara Queen Consort Portugal. He the son of John II King Castile and Maria Trastámara Queen Consort Castile. They were first cousins. He a great x 2 grandson of King Edward III of England. She a great x 2 granddaughter of King Edward III of England.
On 21st February 1462 Joanna "La Beltraneja" Trastámara Queen Consort Portugal was born to Henry IV King Castile [aged 37] and Joan Aviz Queen Consort Castile [aged 22]. Her nickname "La Beltraneja" a reference to her supposed illegitimacy; she was suspected of being the child of Beltrán de la Cueva 1st Duke of Alburquerque [aged 19]. She was Henry and Joan's only child. She a great x 3 granddaughter of King Edward III of England. Coefficient of inbreeding 11.39%.
On 11th December 1474 [her father] Henry IV King Castile [aged 49] died. His half sister [her aunt] Isabella [aged 23] succeeded Queen Castile.
In 1475 Alfonso "The African" V King Portugal [aged 42] and Joanna "La Beltraneja" Trastámara Queen Consort Portugal [aged 12] were married. She by marriage Queen Consort Portugal. The difference in their ages was 30 years. She the daughter of Henry IV King Castile and Joan Aviz Queen Consort Castile [aged 35]. He the son of Edward "The Philosopher" I King Portugal and Eleanor Trastámara Queen Consort Portugal. They were uncle and niece. He a great x 2 grandson of King Edward III of England. She a great x 3 granddaughter of King Edward III of England.
On 13th June 1475 [her mother] Joan Aviz Queen Consort Castile [aged 36] died.
On 28th August 1481 [her uncle] Alfonso "The African" V King Portugal [aged 49] died. His son [her step-son] John [aged 26] succeeded II King Portugal. Eleanor Viseu Queen Consort Portugal [aged 23] by marriage Queen Consort Portugal.
On 12th April 1530 Joanna "La Beltraneja" Trastámara Queen Consort Portugal [aged 68] died.
Kings Wessex: Great x 13 Grand Daughter of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 17 Grand Daughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Kings Seisyllwg: Great x 19 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 17 Grand Daughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Kings Godwinson: Great x 12 Grand Daughter of King Harold II of England
Kings England: Great x 3 Grand Daughter of King Edward III of England
Kings Scotland: Great x 11 Grand Daughter of King Malcolm III of Scotland
Kings France: Great x 5 Grand Daughter of King Philip IV of France
Kings Duke Aquitaine: Great x 17 Grand Daughter of Ranulf I Duke Aquitaine
Kings Spain: Great x 8 Grand Daughter of Alfonso II King Aragon
Great x 4 Grandfather: Alfonso "Avenger" XI King Castile 
4 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandfather: Henry "Fratricide" II King Castile 5 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Eleanor Guzman
Great x 2 Grandfather: John I King Castile 3 x Great Grandson of King Louis IX of France
Great x 4 Grandfather: Juan Manuel Prince of Villena 3 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandmother: Juana Manuel Queen of Castile 2 x Great Granddaughter of King Louis IX of France
Great x 4 Grandmother: Blanca de la Cerda y Lara Great Granddaughter of King Louis IX of France
Great x 1 Grandfather: Henry III King Castile 4 x Great Grandson of King Louis IX of France
Great x 4 Grandfather: Alfonso IV King Aragon 
2 x Great Grandson of King Louis VIII of France
Great x 3 Grandfather: Peter IV King Aragon 3 x Great Grandson of King Louis VIII of France
Great x 4 Grandmother: Teresa Enteca Queen Consort Aragon
Great x 2 Grandmother: Eleanor Barcelona Queen Consort Castile 4 x Great Granddaughter of King Louis VIII of France
Great x 4 Grandfather: Peter II King Sicily 2 x Great Grandson of King Louis VIII of France
Great x 3 Grandmother: Eleanor of Sicily Queen Consort Aragon 3 x Great Granddaughter of King Louis VIII of France
Grandfather: John II King Castile Great Grandson of King Edward III of England
Great x 4 Grandfather: King Edward II of England 
son of King Edward I of England
Great x 3 Grandfather: King Edward III of England son of King Edward II of England
Great x 4 Grandmother: Isabella of France Queen Consort England 
daughter of King Philip IV of France
Great x 2 Grandfather: John of Gaunt 1st Duke Lancaster son of King Edward III of England
Great x 4 Grandfather: William of Avesnes I Count Hainaut III Count Avesnes III Count Holland II Count Zeeland 4 x Great Grandson of King Stephen I England
Great x 3 Grandmother: Philippa of Hainaut Queen Consort England Great Granddaughter of King Philip III of France
Great x 4 Grandmother: Joan Valois Countess Zeeland Holland Avesnes and Hainaut Granddaughter of King Philip III of France
Great x 1 Grandmother: Catherine of Lancaster Queen Consort Castile 
Granddaughter of King Edward III of England
Great x 4 Grandfather: Alfonso "Avenger" XI King Castile 4 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandfather: Peter "Cruel" I King Castile 5 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Maria Burgundy Queen Consort Castile 
4 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Constance of Castile Duchess of Lancaster 6 x Great Granddaughter of Alfonso II King Aragon
Great x 4 Grandfather: Juan García Padilla 1st Lord Villagera
Great x 3 Grandmother: Maria Padilla
Great x 4 Grandmother: María González Henestrosa Lady Villagera
father: Henry IV King Castile 2 x Great Grandson of King Edward III of England
Great x 4 Grandfather: Alfonso "Avenger" XI King Castile 4 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandfather: Henry "Fratricide" II King Castile 5 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Eleanor Guzman
Great x 2 Grandfather: John I King Castile 3 x Great Grandson of King Louis IX of France
Great x 4 Grandfather: Juan Manuel Prince of Villena 3 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandmother: Juana Manuel Queen of Castile 2 x Great Granddaughter of King Louis IX of France
Great x 4 Grandmother: Blanca de la Cerda y Lara Great Granddaughter of King Louis IX of France
Great x 1 Grandfather: Ferdinand I King Aragon 4 x Great Grandson of King Louis IX of France
Great x 4 Grandfather: Alfonso IV King Aragon 2 x Great Grandson of King Louis VIII of France
Great x 3 Grandfather: Peter IV King Aragon 3 x Great Grandson of King Louis VIII of France
Great x 4 Grandmother: Teresa Enteca Queen Consort Aragon
Great x 2 Grandmother: Eleanor Barcelona Queen Consort Castile 4 x Great Granddaughter of King Louis VIII of France
Great x 4 Grandfather: Peter II King Sicily 2 x Great Grandson of King Louis VIII of France
Great x 3 Grandmother: Eleanor of Sicily Queen Consort Aragon 3 x Great Granddaughter of King Louis VIII of France
Grandmother: Maria Trastámara Queen Consort Castile 5 x Great Granddaughter of King Louis IX of France
Great x 4 Grandfather: Ferdinand IV King Castile IV King Leon 3 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandfather: Alfonso "Avenger" XI King Castile 4 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Constance Burgundy Queen Consort Castile Queen Consort Leon 3 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Sancho Alfonso Ivrea 5 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandmother: Eleanor Guzman
Great x 1 Grandmother: Eleanor of Alberquerque Queen Consort Aragon 6 x Great Granddaughter of Alfonso II King Aragon
Great x 4 Grandfather: Alfonso "Brave" IV King Portugal 3 x Great Grandson of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Peter I King Portugal 4 x Great Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Beatrice Ivrea Queen Consort Portugal 3 x Great Granddaughter of Alfonso II King Aragon
Great x 2 Grandmother: Beatrice Burgundy 5 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Pedro Fernández de Castro
Great x 3 Grandmother: Inês Castro
Joanna "La Beltraneja" Trastámara Queen Consort Portugal 3 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: Denis I King Portugal 2 x Great Grandson of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Alfonso "Brave" IV King Portugal 3 x Great Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Elisabeth Barcelona Queen Consort Portugal 2 x Great Granddaughter of Alfonso II King Aragon
Great x 2 Grandfather: Peter I King Portugal 4 x Great Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Sancho IV King Castile IV King Leon 2 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandmother: Beatrice Ivrea Queen Consort Portugal 3 x Great Granddaughter of Alfonso II King Aragon
Great x 4 Grandmother: Maria Molina Queen Consort Castile Queen Consort Leon
Great x 1 Grandfather: King John I of Portugal 
5 x Great Grandson of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Pedro Fernández de Castro
Great x 2 Grandmother: Inês Castro
Grandfather: Edward "The Philosopher" I King Portugal Great Grandson of King Edward III of England
Great x 4 Grandfather: King Edward II of England son of King Edward I of England
Great x 3 Grandfather: King Edward III of England son of King Edward II of England
Great x 4 Grandmother: Isabella of France Queen Consort England daughter of King Philip IV of France
Great x 2 Grandfather: John of Gaunt 1st Duke Lancaster son of King Edward III of England
Great x 4 Grandfather: William of Avesnes I Count Hainaut III Count Avesnes III Count Holland II Count Zeeland 4 x Great Grandson of King Stephen I England
Great x 3 Grandmother: Philippa of Hainaut Queen Consort England Great Granddaughter of King Philip III of France
Great x 4 Grandmother: Joan Valois Countess Zeeland Holland Avesnes and Hainaut Granddaughter of King Philip III of France
Great x 1 Grandmother: Philippa of Lancaster Queen Consort Portugal Granddaughter of King Edward III of England
Great x 4 Grandfather: Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster Grandson of King Henry III of England
Great x 3 Grandfather: Henry of Grosmont 1st Duke Lancaster 
Great Grandson of King Henry III of England
Great x 4 Grandmother: Maud Chaworth 
9 x Great Granddaughter of Hugh I King of the Franks
Great x 2 Grandmother: Blanche Duchess of Lancaster 2 x Great Granddaughter of King Henry III of England
Great x 4 Grandfather: Henry Beaumont Earl Buchan 
3 x Great Grandson of King Henry I "Beauclerc" England
Great x 3 Grandmother: Isabel Beaumont Duchess Lancaster 4 x Great Granddaughter of King Henry I "Beauclerc" England
Great x 4 Grandmother: Alice Comyn 4th Countess Buchan 5 x Great Granddaughter of King David I of Scotland
mother: Joan Aviz Queen Consort Castile 2 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: Alfonso "Avenger" XI King Castile 4 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandfather: Henry "Fratricide" II King Castile 5 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Eleanor Guzman
Great x 2 Grandfather: John I King Castile 3 x Great Grandson of King Louis IX of France
Great x 4 Grandfather: Juan Manuel Prince of Villena 3 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandmother: Juana Manuel Queen of Castile 2 x Great Granddaughter of King Louis IX of France
Great x 4 Grandmother: Blanca de la Cerda y Lara Great Granddaughter of King Louis IX of France
Great x 1 Grandfather: Ferdinand I King Aragon 4 x Great Grandson of King Louis IX of France
Great x 4 Grandfather: Alfonso IV King Aragon 2 x Great Grandson of King Louis VIII of France
Great x 3 Grandfather: Peter IV King Aragon 3 x Great Grandson of King Louis VIII of France
Great x 4 Grandmother: Teresa Enteca Queen Consort Aragon
Great x 2 Grandmother: Eleanor Barcelona Queen Consort Castile 4 x Great Granddaughter of King Louis VIII of France
Great x 4 Grandfather: Peter II King Sicily 2 x Great Grandson of King Louis VIII of France
Great x 3 Grandmother: Eleanor of Sicily Queen Consort Aragon 3 x Great Granddaughter of King Louis VIII of France
Grandmother: Eleanor Trastámara Queen Consort Portugal 5 x Great Granddaughter of King Louis IX of France
Great x 4 Grandfather: Ferdinand IV King Castile IV King Leon 3 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandfather: Alfonso "Avenger" XI King Castile 4 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Constance Burgundy Queen Consort Castile Queen Consort Leon 3 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Sancho Alfonso Ivrea 5 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandmother: Eleanor Guzman
Great x 1 Grandmother: Eleanor of Alberquerque Queen Consort Aragon 6 x Great Granddaughter of Alfonso II King Aragon
Great x 4 Grandfather: Alfonso "Brave" IV King Portugal 3 x Great Grandson of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Peter I King Portugal 4 x Great Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Beatrice Ivrea Queen Consort Portugal 3 x Great Granddaughter of Alfonso II King Aragon
Great x 2 Grandmother: Beatrice Burgundy 5 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Pedro Fernández de Castro
Great x 3 Grandmother: Inês Castro