Paternal Family Tree: Reginar aka Percy
Maternal Family Tree: Margaret Geneva Countess Savoy 1180-1252
In 1311 [her father] John Brabant III Duke Brabant [aged 10] and [her mother] Marie Évreux Duchess of Brabant [aged 8] were married. She the daughter of [her grandfather] Louis I Count Évreux [aged 34] and [her grandmother] Margaret Artois Countess Évreux [aged 26]. He the son of John "Peaceful" Reginar II Duke Brabant [aged 35] and Margaret Plantagenet Duchess Brabant [aged 35]. They were second cousins. He a grandson of King Edward I of England. She a great x 2 granddaughter of King Henry III of England.
In 1322 Joanna Reginar Duchess Brabant was born to John Brabant III Duke Brabant [aged 21] and Marie Évreux Duchess of Brabant [aged 19]. She a great granddaughter of King Edward I of England. Coefficient of inbreeding 3.60%.
In 1334 William Hainaut II Count Hainaut [aged 27] and Joanna Reginar Duchess Brabant [aged 12] were married. She the daughter of John Brabant III Duke Brabant [aged 33] and Marie Évreux Duchess of Brabant [aged 31]. He the son of William of Avesnes I Count Hainaut III Count Avesnes III Count Holland II Count Zeeland [aged 48] and Joan Valois Countess Zeeland Holland Avesnes and Hainaut [aged 40]. They were half second cousins. He a great x 5 grandson of King Stephen I England. She a great granddaughter of King Edward I of England.
On 31st October 1335 [her mother] Marie Évreux Duchess of Brabant [aged 32] died.
On 7th June 1337 [her father-in-law] William of Avesnes I Count Hainaut III Count Avesnes III Count Holland II Count Zeeland [aged 51] died. His son [her husband] William [aged 30] succeeded II Count Hainaut. Joanna Reginar Duchess Brabant [aged 15] by marriage Countess Hainaut.
On 26th September 1345 [her husband] William Hainaut II Count Hainaut [aged 38] was killed at the Battle of Warns. His sister [her sister-in-law] Margaret [aged 33] succeeded II Countess Hainaut. Louis Wittelsbach IV Holy Roman Emperor [aged 63] by marriage Count Hainaut.
On 1st July 1347 [her brother-in-law] Louis of Male III Count Nevers II Count Flanders [aged 16] and [her sister] Margaret of Brabant Countess Nevers and Flanders [aged 24] were married. She by marriage Countess Nevers, Countess Flanders. She the daughter of [her father] John Brabant III Duke Brabant [aged 47] and [her mother] Marie Évreux Duchess of Brabant. He the son of Louis Dampierre II Count Nevers I Count Flanders and Margaret Capet Countess Nevers amd Flanders [aged 38]. They were half second cousin once removed. She a great granddaughter of King Edward I of England.
On 5th December 1355 [her father] John Brabant III Duke Brabant [aged 55] died. His daughter Joanna [aged 33] succeeded as Duchess Brabant.
In 1380 [her sister] Margaret of Brabant Countess Nevers and Flanders [aged 56] died.
Life Charles VI by a Monk of St Denis [~1420]. While the king was still engaging in hunting in the forest of Cosie, around the end of May, the Lady Duchess of Brabant [aged 73], with carriages and horsemen and with the greatest equipment, came to visit him, in order to enjoy her pleasant conversation; she was courteously received by him, generously refreshed, and adorned with gifts. Indeed, as she was already worn out by age, desiring to see the king and the lilies in her last days, she wished to see the lord Duke of Burgundy [aged 53] with special love, who, by reason of his wife [[her niece] Margaret Dampierre Duchess Burgundy [aged 47]], ought to succeed her in the Duchy of Brabant. In the king's court and that of his illustrious ones, with her consent, it was said that the said duke should take possession of the dominion; and the said lady agreed, overcome by the king's strong prayers, that the second-born son of the duke, named Anthony [aged 11], should henceforth be nurtured in his court and should obtain the duchy after his death.
Dum adhuc rex in saltu Cosie venacionem exerceret, mense mayo circa finem, domina ducissa Brabancie cum curribus et equitibus et apparatu maximo, ut suo grato colloquio uteretur, ad visitandum eum venit; a quo curialiter recepta est, refecta dapsiliter et jocalibus dotata. Senio namque jam confecta, ultimis suis diebus regem et lilia defferentes desiderabat videre, amore tamen speciali dominum ducem Burgundie, qui racione uxoris sue ducisse eidem debebat succedere in Brebantino ducatu. In consistorio autem regis et suorum illustrium, eadem consenciente, dictum fuit quod dictus dux dominii possessionem caperet; assenciitque dicta domina, regis vallidis precibus victa, ut filius secundo genitus ducis, nuncupatus Antonius, deinceps in ejus curia nutriretur, et ducatum obtineret post ejus obitum.
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On 1st November 1406 Joanna Reginar Duchess Brabant [aged 84] died.
Kings Wessex: Great x 9 Grand Daughter of King Edmund "Ironside" I of England
Kings England: Great Grand Daughter of King Edward I of England
Kings Scotland: Great x 7 Grand Daughter of King Malcolm III of Scotland
Kings France: Great Grand Daughter of King Philip III of France
Kings Duke Aquitaine: Great x 13 Grand Daughter of Ranulf I Duke Aquitaine
Kings Spain: Great x 5 Grand Daughter of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Henry Reginar VIII Duke Lower Lorraine I Duke Brabant 8 x Great Grandson of King Edward "Elder" of the Anglo Saxons
Great x 3 Grandfather: Henry Reginar II Duke Brabant Great Grandson of King Stephen I England
Great x 4 Grandmother: Maud Metz Granddaughter of King Stephen I England
Great x 2 Grandfather: Henry Reginar III Duke Brabant 2 x Great Grandson of King Stephen I England
Great x 4 Grandfather: Philip Swabia
Great x 3 Grandmother: Marie Swabia Duchess Brabant
Great x 1 Grandfather: John Reginar I Duke Brabant 3 x Great Grandson of King Stephen I England
Great x 4 Grandfather: Odo III Duke Burgundy 
3 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandfather: Hugh IV Duke Burgundy 4 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandmother: Alice Vergy Duchess Burgundy
Great x 2 Grandmother: Adelaide Burgundy Duchess Brabant 5 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandfather: Robert Capet III Count Dreux 5 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandmother: Yolande Capet Duchess Burgundy 6 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Aénor de Saint-Valéry 7 x Great Granddaughter of Hugh I King of the Franks
Grandfather: John "Peaceful" Reginar II Duke Brabant 4 x Great Grandson of King Stephen I England
Great x 4 Grandfather: Guy Dampierre 
Great x 3 Grandfather: William Dampierre II Count Flanders
Great x 4 Grandmother: Mathilde Bouron
Great x 2 Grandfather: Guy Dampierre Count Flanders 4 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandfather: Baldwin IX Count Flanders VI Count Hainaut 5 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandmother: Margaret II Countess Flanders 3 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandmother: Marie Blois Countess Flanders 
2 x Great Granddaughter of King William "Conqueror" I of England
Great x 1 Grandmother: Margaret Dampierre Duchess Brabant 5 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandfather: William "Red" Béthune II Lord Bethune
Great x 3 Grandfather: Robert VII Lord Bethune
Great x 2 Grandmother: Mathilde Bethune
father: John Brabant III Duke Brabant Grandson of King Edward I of England
Great x 4 Grandfather: King Henry "Curtmantle" II of England 
Grandson of King Henry I "Beauclerc" England
Great x 3 Grandfather: King John of England son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Eleanor of Aquitaine Queen Consort Franks and England 4 x Great Granddaughter of Hugh I King of the Franks
Great x 2 Grandfather: King Henry III of England son of King John of England
Great x 4 Grandfather: Aymer I Count Angoulême 12 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 3 Grandmother: Isabella of Angoulême Queen Consort England 5 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Alice Courtenay Countess Angoulême 4 x Great Granddaughter of Hugh I King of the Franks
Great x 1 Grandfather: King Edward I of England son of King Henry III of England
Great x 4 Grandfather: Alfonso Barcelona II Count Provence 
son of Alfonso II King Aragon
Great x 3 Grandfather: Raymond IV Count Provence Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Gersenda II Sabran Countess Provence
Great x 2 Grandmother: Eleanor of Provence Queen Consort England Great Granddaughter of Alfonso II King Aragon
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 Grandmother: Beatrice Savoy Countess Provence 13 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Margaret Geneva Countess Savoy
Grandmother: Margaret Plantagenet Duchess Brabant daughter of King Edward I 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 Grandmother: Eleanor of Castile Queen Consort England 2 x Great Granddaughter of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Alberic Dammartin
Great x 3 Grandfather: Simon Dammartin 10 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Mathilde Clermont 9 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 2 Grandmother: Joan Dammartin Queen Consort Castile and Leon 2 x Great Granddaughter of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: William Montgomery IV Count Ponthieu 6 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandmother: Marie Montgomery Countess Ponthieu Great Granddaughter of Alfonso VII King Castile VII King Leon
Great x 4 Grandmother: Alys Capet Countess Ponthieu Granddaughter of Alfonso VII King Castile VII King Leon
Joanna Reginar Duchess Brabant Great Granddaughter of King Edward I of England
Great x 4 Grandfather: King Philip II of France 2 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandfather: King Louis VIII of France son of King Philip II of France
Great x 4 Grandmother: Isabelle Flanders Queen Consort France 5 x Great Granddaughter of Hugh I King of the Franks
Great x 2 Grandfather: King Louis IX of France son of King Louis VIII of France
Great x 4 Grandfather: Alfonso VIII King Castile Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandmother: Blanche Ivrea Queen Consort France 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: King Philip III of France son of King Louis IX of France
Great x 4 Grandfather: Alfonso Barcelona II Count Provence son of Alfonso II King Aragon
Great x 3 Grandfather: Raymond IV Count Provence Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Gersenda II Sabran Countess Provence
Great x 2 Grandmother: Margaret Provence Queen Consort France Great Granddaughter of Alfonso II King Aragon
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 Grandmother: Beatrice Savoy Countess Provence 13 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Margaret Geneva Countess Savoy
Grandfather: Louis I Count Évreux son of King Philip III of France
Great x 4 Grandfather: Henry Reginar VIII Duke Lower Lorraine I Duke Brabant 8 x Great Grandson of King Edward "Elder" of the Anglo Saxons
Great x 3 Grandfather: Henry Reginar II Duke Brabant Great Grandson of King Stephen I England
Great x 4 Grandmother: Maud Metz Granddaughter of King Stephen I England
Great x 2 Grandfather: Henry Reginar III Duke Brabant 2 x Great Grandson of King Stephen I England
Great x 4 Grandfather: Philip Swabia
Great x 3 Grandmother: Marie Swabia Duchess Brabant
Great x 1 Grandmother: Maria of Brabant Queen Consort France 3 x Great Granddaughter of King Stephen I England
Great x 4 Grandfather: Odo III Duke Burgundy 3 x Great Grandson of King William "Conqueror" I of England
Great x 3 Grandfather: Hugh IV Duke Burgundy 4 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandmother: Alice Vergy Duchess Burgundy
Great x 2 Grandmother: Adelaide Burgundy Duchess Brabant 5 x Great Granddaughter of King William "Conqueror" I of England
Great x 4 Grandfather: Robert Capet III Count Dreux 5 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandmother: Yolande Capet Duchess Burgundy 6 x Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Aénor de Saint-Valéry 7 x Great Granddaughter of Hugh I King of the Franks
mother: Marie Évreux Duchess of Brabant Granddaughter of King Philip III of France
Great x 4 Grandfather: King Louis VIII of France son of King Philip II of France
Great x 3 Grandfather: Robert Capet Count of Artois son of King Louis VIII of France
Great x 4 Grandmother: Blanche Ivrea Queen Consort France Granddaughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Robert Artois II Count Artois Grandson of King Louis VIII of France
Great x 4 Grandfather: Henry Reginar II Duke Brabant Great Grandson of King Stephen I England
Great x 3 Grandmother: Matilda Reginar Countess Saint Pol 2 x Great Granddaughter of King Stephen I England
Great x 4 Grandmother: Marie Swabia Duchess Brabant
Great x 1 Grandfather: Philip Artois Great Grandson of King Louis VIII of France
Great x 4 Grandfather: Robert Courtenay 4 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandfather: Peter Courtenay 5 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandmother: Matilde Mehun
Great x 2 Grandmother: Amice Countenay Countess Artois 4 x Great Granddaughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Gaucher de Joigny 
Great x 3 Grandmother: Peronnelle de Joigny 3 x Great Granddaughter of King Henry I "Beauclerc" England
Great x 4 Grandmother: Amicie de Montfort 2 x Great Granddaughter of King Henry I "Beauclerc" England
Grandmother: Margaret Artois Countess Évreux Great Granddaughter of King Henry III of England
Great x 4 Grandfather: Peter of Dreux aka Mauclerc Duke Brittany 5 x Great Grandson of Hugh I King of the Franks
Great x 3 Grandfather: John "The Red" Capet I Duke Brittany 3 x Great Grandson of King David I of Scotland
Great x 4 Grandmother: Alix Thouars Duchess of Brittany 2 x Great Granddaughter of King David I of Scotland
Great x 2 Grandfather: John II Duke Brittany 3 x Great Grandson of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Theobald IV King Navarre Great Grandson of Alfonso VII King Castile VII King Leon
Great x 3 Grandmother: Blanche "Navarre" Blois Duchess Brittany 2 x Great Granddaughter of Alfonso VII King Castile VII King Leon
Great x 4 Grandmother: Agnes of Beaujeu Countess Savoy
Great x 1 Grandmother: Blanche Capet Granddaughter of King Henry III of England
Great x 4 Grandfather: King John of England son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: King Henry III of England son of King John of England
Great x 4 Grandmother: Isabella of Angoulême Queen Consort England 5 x Great Granddaughter of Hugh I King of the Franks
Great x 2 Grandmother: Beatrice Plantagenet daughter of King Henry III of England
Great x 4 Grandfather: Raymond IV Count Provence Grandson of Alfonso II King Aragon
Great x 3 Grandmother: Eleanor of Provence Queen Consort England Great Granddaughter of Alfonso II King Aragon
Great x 4 Grandmother: Beatrice Savoy Countess Provence 13 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor