Paternal Family Tree: Ivrea
Before 4th October 1379 [his father] John I King Castile [aged 21] and [his mother] Eleanor Barcelona Queen Consort Castile [aged 21] were married. She by marriage Queen Consort Castile. She the daughter of [his grandfather] Peter IV King Aragon [aged 60] and [his grandmother] Eleanor of Sicily Queen Consort Aragon. He the son of Henry "Fratricide" II King Castile and Juana Manuel Queen of Castile [aged 40]. They were third cousin once removed. He a great x 5 grandson of King Henry "Curtmantle" II of England.
On 27th November 1380 Ferdinand I King Aragon was born to John I King Castile [aged 22] and Eleanor Barcelona Queen Consort Castile [aged 22].
On 13th September 1382 [his mother] Eleanor Barcelona Queen Consort Castile [aged 24] died.
Before 17th September 1388 [his brother] Henry III King Castile [aged 8] and [his sister-in-law] Catherine of Lancaster Queen Consort Castile [aged 15] were married at Palencia Cathedral [Map]. She by marriage Queen Consort Castile. She the daughter of John of Gaunt 1st Duke Lancaster [aged 48] and Constance of Castile Duchess of Lancaster [aged 34]. He the son of [his father] John I King Castile [aged 30] and [his mother] Eleanor Barcelona Queen Consort Castile. They were half second cousins. She a granddaughter of King Edward III of England.
On 9th October 1390 [his father] John I King Castile [aged 32] died in a riding accident when he fell from his horse while riding in a fantasia, a traditional display of horsemanship with light horsemen known as farfanes mounted and equipped in the Arab style.. His son [his brother] Henry [aged 11] succeeded III King Castile.
In 1394 Ferdinand I King Aragon [aged 13] and Eleanor of Alberquerque Queen Consort Aragon [aged 20] were married. She by marriage Queen Consort Aragon. He the son of John I King Castile and Eleanor Barcelona Queen Consort Castile. They were first cousin once removed.
In 1396 [his daughter] Maria Trastámara Queen Consort Castile was born to Ferdinand I King Aragon [aged 15] and [his wife] Eleanor of Alberquerque Queen Consort Aragon [aged 22]. Coefficient of inbreeding 4.42%. She married 1418 her first cousin John II King Castile, son of Henry III King Castile and Catherine of Lancaster Queen Consort Castile, and had issue.
In 1396 [his son] Alfonso V King Aragon was born to Ferdinand I King Aragon [aged 15] and [his wife] Eleanor of Alberquerque Queen Consort Aragon [aged 22]. Coefficient of inbreeding 4.42%. He married 12th June 1415 his first cousin Maria Trastámara Queen Consort Aragon, daughter of Henry III King Castile and Catherine of Lancaster Queen Consort Castile.
On 29th June 1398 [his son] John II King Aragon was born to Ferdinand I King Aragon [aged 17] and [his wife] Eleanor of Alberquerque Queen Consort Aragon [aged 24]. Coefficient of inbreeding 4.42%. He married 1. before 29th May 1421 his first cousin once removed Blanche Évreux Queen Consort Aragon, daughter of Charles III King Navarre and Eleanor of Castile Queen Consort Navarre, and had issue 2. after 1441 his second cousin once removed Juana Enríquez Queen Consort Aragon, daughter of Fadrique Enríquez Count Melgar Count Rueda and Mariana Fernández Countess Melgar, and had issue.
On 25th December 1406 [his brother] Henry III King Castile [aged 27] died. His son [his future son-in-law] John [aged 1] succeeded II King Castile.
On 31st May 1410 [his uncle] King Martin I of Aragon [aged 53] died. His nephew Ferdinand [aged 29] succeeded I King Aragon.
Chronicle of Walter of Guisborough
A canon regular of the Augustinian Guisborough Priory, Yorkshire, formerly known as The Chronicle of Walter of Hemingburgh, describes the period from 1066 to 1346. Before 1274 the Chronicle is based on other works. Thereafter, the Chronicle is original, and a remarkable source for the events of the time. This book provides a translation of the Chronicle from that date. The Latin source for our translation is the 1849 work edited by Hans Claude Hamilton. Hamilton, in his preface, says: 'In the present work we behold perhaps one of the finest samples of our early chronicles, both as regards the value of the events recorded, and the correctness with which they are detailed; Nor will the pleasing style of composition be lightly passed over by those capable of seeing reflected from it the tokens of a vigorous and cultivated mind, and a favourable specimen of the learning and taste of the age in which it was framed.'
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On 12th June 1415 Alfonso V King Aragon [aged 19] and Maria Trastámara Queen Consort Aragon [aged 13] were married. She by marriage Queen Consort Aragon. She the daughter of Henry III King Castile and Catherine of Lancaster Queen Consort Castile [aged 42]. He the son of Ferdinand I King Aragon [aged 34] and Eleanor of Alberquerque Queen Consort Aragon [aged 41]. They were first cousins. She a great granddaughter of King Edward III of England.
On 2nd April 1416 Ferdinand I King Aragon [aged 35] died. His son Alfonso [aged 20] succeeded V King Aragon.
On 16th December 1435 [his former wife] Eleanor of Alberquerque Queen Consort Aragon [aged 61] died.
[his son] Peter Trastámara was born to Ferdinand I King Aragon and Eleanor of Alberquerque Queen Consort Aragon. Coefficient of inbreeding 4.42%.
[his daughter] Eleanor Trastámara Queen Consort Portugal was born to Ferdinand I King Aragon and Eleanor of Alberquerque Queen Consort Aragon. Coefficient of inbreeding 4.42%. She married 22nd September 1428 her first cousin once removed Edward "The Philosopher" I King Portugal, son of King John I of Portugal and Philippa of Lancaster Queen Consort Portugal, and had issue.
[his son] Henry Trastámara was born to Ferdinand I King Aragon and Eleanor of Alberquerque Queen Consort Aragon. Coefficient of inbreeding 4.42%.
[his son] Sancho Trastámara was born to Ferdinand I King Aragon and Eleanor of Alberquerque Queen Consort Aragon. Coefficient of inbreeding 4.42%.
Kings Wessex: Great x 11 Grand Son of King Edmund "Ironside" I of England
Kings Godwinson: Great x 10 Grand Son of King Harold II of England
Kings England: Great x 6 Grand Son of King Henry "Curtmantle" II of England
Kings Scotland: Great x 9 Grand Son of King Malcolm III of Scotland
Kings France: Great x 4 Grand Son of King Louis IX of France
Kings Duke Aquitaine: Great x 15 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 6 Grand Son of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Alfonso X King Castile X King Leon 
2 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandfather: Sancho IV King Castile IV King Leon 2 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Violante Barcelona Queen Consort Castile Queen Consort Leon 
Great Granddaughter of Alfonso II King Aragon
Great x 2 Grandfather: Ferdinand IV King Castile IV King Leon 3 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandmother: Maria Molina Queen Consort Castile Queen Consort Leon
Great x 1 Grandfather: Alfonso "Avenger" XI King Castile 4 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandfather: Alfonso III King Portugal 
Great Grandson of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Denis I King Portugal 2 x Great Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Beatrice Queen Consort Portugal 3 x Great Granddaughter of Alfonso VII King Castile VII King Leon
Great x 2 Grandmother: Constance Burgundy Queen Consort Castile Queen Consort Leon 3 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Peter III King Aragon Great Grandson of Alfonso II King Aragon
Great x 3 Grandmother: Elisabeth Barcelona Queen Consort Portugal 2 x Great Granddaughter of Alfonso II King Aragon
Great x 4 Grandmother: Constance Hohenstaufen Queen Consort Aragon 
5 x Great Granddaughter of King William "Conqueror" I of England
Grandfather: Henry "Fratricide" II King Castile 5 x Great Grandson of Alfonso II King Aragon
Great x 1 Grandmother: Eleanor Guzman
Father: John I King Castile 3 x Great Grandson of King Louis IX of France
Great x 4 Grandfather: Alfonso IX King Leon Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandfather: Ferdinand III King Castile III King Leon Great Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandmother: Berengaria Ivrea I Queen Castile Granddaughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Manuel Ivrea 2 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Philip King Germany 8 x Great Grandson of King Alfred "The Great" of Wessex
Great x 3 Grandmother: Elisabeth Hohenstaufen Queen Consort Castile Queen Consort Leon 9 x Great Granddaughter of King Alfred "The Great" of Wessex
Great x 1 Grandfather: Juan Manuel Prince of Villena 3 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 4 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 3 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 Grandmother: Margaret Geneva Countess Savoy
Great x 2 Grandmother: Beatrice Savoy 14 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandfather: Barral of Baux 
Great x 3 Grandmother: Cecilia Baux Countess Savoy
Grandmother: Juana Manuel Queen of Castile 2 x Great Granddaughter of King Louis IX of France
Great x 4 Grandfather: Alfonso X King Castile X King Leon 2 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandfather: Ferdinand de la Cerda Ivrea 2 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Violante Barcelona Queen Consort Castile Queen Consort Leon Great Granddaughter of Alfonso II King Aragon
Great x 2 Grandfather: Ferdinando de la Cerda Grandson of King Louis IX of France
Great x 4 Grandfather: King Louis IX of France 
son of King Louis VIII of France
Great x 3 Grandmother: Blanche Capet daughter of King Louis IX of France
Great x 4 Grandmother: Margaret Provence Queen Consort France Great Granddaughter of Alfonso II King Aragon
Great x 1 Grandmother: Blanca de la Cerda y Lara Great Granddaughter of King Louis IX of France
Great x 3 Grandfather: Juan Núñez de Lara
Great x 2 Grandmother: Juana "La Palomilla" Núñez de Lara 3 x Great Granddaughter of Alfonso II King Aragon
Great x 4 Grandfather: Diego López III de Haro 2 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandmother: Teresa Díaz de Haro 2 x Great Granddaughter of Alfonso II King Aragon
Great x 4 Grandmother: Constanza de Béarn Great Granddaughter of Alfonso II King Aragon
Ferdinand I King Aragon 4 x Great Grandson of King Louis IX of France
Great x 4 Grandfather: James I King Aragon Grandson of Alfonso II King Aragon
Great x 3 Grandfather: Peter III King Aragon Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Violant Árpád Queen Consort Aragon 4 x Great Granddaughter of King Harold II of England
Great x 2 Grandfather: James "The Just" II King Aragon 2 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandfather: Manfred King Sicily 10 x Great Grandson of King Alfred "The Great" of Wessex
Great x 3 Grandmother: Constance Hohenstaufen Queen Consort Aragon 5 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandmother: Beatrice Savoy Marchioness of Saluzzo 4 x Great Granddaughter of King William "Conqueror" I of England
Great x 1 Grandfather: Alfonso IV King Aragon 2 x Great Grandson of King Louis VIII of France
Great x 4 Grandfather: King Charles Capet of Sicily son of King Louis VIII of France
Great x 3 Grandfather: Charles II King Naples Grandson of King Louis VIII of France
Great x 4 Grandmother: Beatrice Provence Queen Consort Sicily Great Granddaughter of Alfonso II King Aragon
Great x 2 Grandmother: Blanche Capet Queen Consort Aragon Great Granddaughter of King Louis VIII of France
Great x 4 Grandfather: Stephen V of Hungary 5 x Great Grandson of King Harold II of England
Great x 3 Grandmother: Mary of Hungary Queen Consort Naples 6 x Great Granddaughter of King Harold II of England
Great x 4 Grandmother: Elizabeth Cuman
Grandfather: Peter IV King Aragon 3 x Great Grandson of King Louis VIII of France
Great x 1 Grandmother: Teresa Enteca Queen Consort Aragon
Mother: Eleanor Barcelona Queen Consort Castile 4 x Great Granddaughter of King Louis VIII of France
Great x 4 Grandfather: James I King Aragon Grandson of Alfonso II King Aragon
Great x 3 Grandfather: Peter III King Aragon Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Violant Árpád Queen Consort Aragon 4 x Great Granddaughter of King Harold II of England
Great x 2 Grandfather: Frederick III King Sicily 2 x Great Grandson of Alfonso II King Aragon
Great x 1 Grandfather: Peter II King Sicily 2 x Great Grandson of King Louis VIII of France
Great x 4 Grandfather: King Charles Capet of Sicily son of King Louis VIII of France
Great x 3 Grandfather: Charles II King Naples Grandson of King Louis VIII of France
Great x 4 Grandmother: Beatrice Provence Queen Consort Sicily Great Granddaughter of Alfonso II King Aragon
Great x 2 Grandmother: Eleanor Capet Great Granddaughter of King Louis VIII of France
Great x 4 Grandfather: Stephen V of Hungary 5 x Great Grandson of King Harold II of England
Great x 3 Grandmother: Mary of Hungary Queen Consort Naples 6 x Great Granddaughter of King Harold II of England
Great x 4 Grandmother: Elizabeth Cuman
Grandmother: Eleanor of Sicily Queen Consort Aragon 3 x Great Granddaughter of King Louis VIII of France