Paternal Family Tree: Ivrea
Maternal Family Tree: Leonor de Alvim
On 19th October 1469 [her father] Ferdinand II King Aragon [aged 17] and [her mother] Isabella Queen Castile [aged 18] were married. She by marriage Queen Consort Aragon. She the daughter of [her grandfather] John II King Castile and [her grandmother] Isabella Aviz Queen Consort Castile [aged 41]. He the son of John II King Aragon [aged 71] and Juana Enríquez Queen Consort Aragon. They were second cousins. She a great x 2 granddaughter of King Edward III of England.
In 1470 Isabella Trastámara Queen Consort Portugal was born to Ferdinand II King Aragon [aged 17] and Isabella Queen Castile [aged 18]. She a great x 3 granddaughter of King Edward III of England. Coefficient of inbreeding 3.23%.
On 11th December 1474 [her uncle] Henry IV King Castile [aged 49] died. His half sister [her mother] Isabella [aged 23] succeeded Queen Castile.
On 20th January 1479 [her grandfather] John II King Aragon [aged 80] died. His son [her father] Ferdinand [aged 26] succeeded II King Aragon.
In 1480 [her future husband] Afonso Aviz [aged 4] went to live in the town of Moura with his maternal grandmother, [her future mother-in-law] Beatrice Aviz Duchess Viseu [aged 49]. In the early months of the following year, his future wife, Isabella Trastámara Queen Consort Portugal [aged 10], joined him and lived there for about two years.
In 1490 Afonso Aviz [aged 14] and Isabella Trastámara Queen Consort Portugal [aged 20] were married. She the daughter of Ferdinand II King Aragon [aged 37] and Isabella Queen Castile [aged 38]. He the son of John II King Portugal [aged 34] and Eleanor Viseu Queen Consort Portugal [aged 31]. They were second cousins. He a great x 4 grandson of King Edward III of England. She a great x 3 granddaughter of King Edward III of England.
On 13th July 1491 [her husband] Afonso Aviz [aged 16] died.
On 25th October 1495 [her former father-in-law] John II King Portugal [aged 40] died. His first cousin [her future husband] Manuel [aged 26] succeeded I King Portugal.
On 20th October 1496 [her brother-in-law] Philip "Handsome Fair" King Castile [aged 18] and [her sister] Joanna "The Mad" Trastámara Queen Castile [aged 17] were married. She the daughter of [her father] Ferdinand II King Aragon [aged 44] and [her mother] Isabella Queen Castile [aged 45]. He the son of Maximilian Habsburg I Holy Roman Emperor [aged 37] and Mary Valois Duchess Burgundy. They were second cousin once removed. He a great x 4 grandson of King Edward III of England. She a great x 3 granddaughter of King Edward III of England.
In 1497 Manuel "Fortunate" I King Portugal [aged 27] and Isabella Trastámara Queen Consort Portugal [aged 27] were married. She by marriage Queen Consort Portugal. Her first husband being his nephew Afonso Aviz.He would, three years later, marry her younger sister Maria Trastámara Queen Consort Portugal [aged 15]; an example of Married to Two Siblings. She the daughter of Ferdinand II King Aragon [aged 44] and Isabella Queen Castile [aged 45]. They were first cousin once removed. He a great x 3 grandson of King Edward III of England. She a great x 3 granddaughter of King Edward III of England.
In 1498 Isabella Trastámara Queen Consort Portugal [aged 28] died in childbirth.
On 23rd August 1498 [her son] Miguel Aviz was born to [her former husband] Manuel "Fortunate" I King Portugal [aged 29] and Isabella Trastámara Queen Consort Portugal. He a great x 4 grandson of King Edward III of England. Coefficient of inbreeding 8.38%. He died aged one in 1500.
The History of William Marshal was commissioned by his son shortly after William’s death in 1219 to celebrate the Marshal’s remarkable life; it is an authentic, contemporary voice. The manuscript was discovered in 1861 by French historian Paul Meyer. Meyer published the manuscript in its original Anglo-French in 1891 in two books. This book is a line by line translation of the first of Meyer’s books; lines 1-10152. Book 1 of the History begins in 1139 and ends in 1194. It describes the events of the Anarchy, the role of William’s father John, John’s marriages, William’s childhood, his role as a hostage at the siege of Newbury, his injury and imprisonment in Poitou where he met Eleanor of Aquitaine and his life as a knight errant. It continues with the accusation against him of an improper relationship with Margaret, wife of Henry the Young King, his exile, and return, the death of Henry the Young King, the rebellion of Richard, the future King Richard I, war with France, the death of King Henry II, and the capture of King Richard, and the rebellion of John, the future King John. It ends with the release of King Richard and the death of John Marshal.
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In 1500 [her former husband] Manuel "Fortunate" I King Portugal [aged 30] and Maria Trastámara Queen Consort Portugal [aged 18] were married. She by marriage Queen Consort Portugal. She the younger sister of his first wife Isabella Trastámara Queen Consort Portugal; an example of Married to Two Siblings. She the daughter of Ferdinand II King Aragon [aged 47] and Isabella Queen Castile [aged 48]. They were first cousin once removed. He a great x 3 grandson of King Edward III of England. She a great x 3 granddaughter of King Edward III of England.
On 19th October 1505 [her father] Ferdinand II King Aragon [aged 53] and [her step-mother] Germaine Foix Queen Consort Aragon [aged 17] were married. She by marriage Queen Consort Aragon. The difference in their ages was 35 years. She the daughter of Jean Foix Count Étampes and Marie Valois Viscountess Narbonne. He the son of [her grandfather] John II King Aragon and [her grandmother] Juana Enríquez Queen Consort Aragon. They were great uncle and niece.
On 16th July 1518 [her former husband] Manuel "Fortunate" I King Portugal [aged 49] and [her niece] Eleanor of Austria Queen Consort France Queen Consort Portugal [aged 19] were married. She by marriage Queen Consort Portugal. The difference in their ages was 29 years. She the daughter of [her former brother-in-law] Philip "Handsome Fair" King Castile and [her sister] Joanna "The Mad" Trastámara Queen Castile [aged 39]. They were first cousin twice removed. He a great x 3 grandson of King Edward III of England. She a great x 4 granddaughter of King Edward III of England.
On 13th December 1521 [her former husband] Manuel "Fortunate" I King Portugal [aged 52] died. His son [her nephew] John [aged 19] succeeded III King Portugal.
Kings Wessex: Great x 13 Grand Daughter of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 18 Grand Daughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Kings Seisyllwg: Great x 20 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 18 Grand Daughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Kings Godwinson: Great x 13 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: Grand Daughter of John 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: 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
Grandfather: John II King Aragon -2 x Great Grandson of John II King Aragon
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
father: Ferdinand II King Aragon son of John 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: Fadrique Alfonso Ivrea 5 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Eleanor Guzman
Great x 2 Grandfather: Alfonso Enríquez Enríquez 6 x Great Grandson of Alfonso II King Aragon
Great x 1 Grandfather: Fadrique Enríquez Count Melgar Count Rueda 7 x Great Grandson of Alfonso II King Aragon
Great x 2 Grandmother: Juana Mendoza
Grandmother: Juana Enríquez Queen Consort Aragon 8 x Great Granddaughter of Alfonso II King Aragon
Great x 2 Grandfather: Diego Fernández Lord Baena
Great x 1 Grandmother: Mariana Fernández Countess Melgar
Great x 2 Grandmother: Inés Ayala
Isabella Trastámara Queen Consort Portugal Granddaughter of John 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
mother: Isabella Queen Castile 2 x Great Granddaughter of King Edward III of England
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 Grandfather: King John I of Portugal 
5 x Great Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Pedro Fernández de Castro
Great x 3 Grandmother: Inês Castro
Great x 1 Grandfather: Prince John Aviz Constable Portugal Great Grandson of King Edward III of England
Great x 4 Grandfather: King Edward III of England son of King Edward II of England
Great x 3 Grandfather: John of Gaunt 1st Duke Lancaster son of King Edward III of England
Great x 4 Grandmother: Philippa of Hainaut Queen Consort England Great Granddaughter of King Philip III of France
Great x 2 Grandmother: Philippa of Lancaster Queen Consort Portugal Granddaughter of King Edward III of England
Great x 4 Grandfather: Henry of Grosmont 1st Duke Lancaster 
Great Grandson of King Henry III of England
Great x 3 Grandmother: Blanche Duchess of Lancaster 2 x Great Granddaughter of King Henry III of England
Great x 4 Grandmother: Isabel Beaumont Duchess Lancaster 
4 x Great Granddaughter of King Henry I "Beauclerc" England
Grandmother: Isabella Aviz Queen Consort Castile 2 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: Peter I King Portugal 4 x Great Grandson of King Henry "Curtmantle" II of England
Great x 3 Grandfather: King John I of Portugal 5 x Great Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Inês Castro
Great x 2 Grandfather: Afonso Aviz I Duke Braganza 6 x Great Grandson of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Ines Peres
Great x 1 Grandmother: Isabella of Braganza 7 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Nuno Álvares Pereira
Great x 2 Grandmother: Beatriz Pereira de Alvim
Great x 3 Grandmother: Leonor de Alvim