In 1285 [her father] Otto Ivrea IV Count Burgundy (age 37) and [her mother] Mahaut Artois Countess Burgundy (age 17) were married. She by marriage Countess Burgundy. The difference in their ages was 20 years. She the daughter of [her grandfather] Robert Artois II Count Artois (age 34) and [her grandmother] Amice Countenay Countess Artois. He the son of [her grandfather] Hugh Ivrea Count Burgundy and [her grandmother] Adelaide Andechs. They were half fourth cousins. He a great x 5 grandson of King William "Conqueror" I of England. She a great x 3 granddaughter of King Henry "Curtmantle" II of England.

In 1291 [her father] Otto Ivrea IV Count Burgundy (age 43) and Philippa of Bar Countess Burgundy were married. She by marriage Countess Burgundy. She the daughter of Theobald of Bar II Count of Bar (age 70) and Jeanne Toucy Countess Bar. He the son of [her grandfather] Hugh Ivrea Count Burgundy and [her grandmother] Adelaide Andechs. They were fourth cousins. He a great x 5 grandson of King William "Conqueror" I of England. She a great x 5 granddaughter of King William "Conqueror" I of England.

In 1297 Blanche of Burgundy Queen Consort France was born to Otto Ivrea IV Count Burgundy (age 49) and Mahaut Artois Countess Burgundy (age 29).

In 1302 [her father] Otto Ivrea IV Count Burgundy (age 54) died.

In 1307 Charles IV King France I King Navarre (age 12) and Blanche of Burgundy Queen Consort France (age 10) were married. She by marriage Queen Consort of France. She the daughter of Otto Ivrea IV Count Burgundy and Mahaut Artois Countess Burgundy (age 39). He the son of Philip IV King France (age 38) and Joan Blois I Queen Navarre. 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.

In Jan 1314 [her daughter] Philip Capet was born to [her husband] Charles IV King France I King Navarre (age 19) and Blanche of Burgundy Queen Consort France (age 17). Coefficient of inbreeding 2.29%.

On 29 Nov 1314 [her father-in-law] Philip IV King France (age 46) died. On 29 Nov 1314 His son [her brother-in-law] Louis X King France I Navarre (age 25) succeeded X King France: Capet. Margaret of Burgundy Queen Consort France (age 24) by marriage Queen Consort of France although she was in prison for adultery at the time and died four months later.

In 1315 [her daughter] Joan Capet was born to [her husband] Charles IV King France I King Navarre (age 20) and Blanche of Burgundy Queen Consort France (age 18). Coefficient of inbreeding 2.29%.

On 05 Jun 1316 [her brother-in-law] Louis X King France I Navarre (age 26) died. On 15 Nov 1316 His son John "The Posthumous" I King France succeeded posthumously I King France: Capet.

On 20 Nov 1316 John "The Posthumous" I King France died.His uncle [her brother-in-law] Philip V King France I King Navarre (age 23) succeeded V King France: Capet. He also claimed the Kingdom of Navarre although he had no hereditary right to do so since the Kingdom of Navarre was subject to inheritance by the female as well as male line meaning the four year old Joan Capet II Queen Navarre (age 4) was successor by right. The Navarese didn't recognise his claim.

On 19 May 1322 Charles IV King France I King Navarre (age 27) and Blanche of Burgundy Queen Consort France (age 25) marriage annulled as a consequence of her adultery. In 1313 Isabella of France Queen Consort England (age 27) gave gifts of coin-purses to her sisters-in-law Blanche of Burgundy Queen Consort France and Margaret of Burgundy Queen Consort France. The coin-purses were subsequently seen by Isabella to be in the possession of the Norman knights Gautier and Philippe d'Aunay. When Isabella visited her father Philip IV King France again in 1314 she informed him she suspected the two sisters to be having affairs with the two knights. The two knights were arrested, confessed to adultery under torture, and were executed. The two women were sentenced to life imprisonment at Château Gaillard [Map]. Margaret's husband Louis X King France I Navarre became King in Nov 1314 whilst she was in prison; she became Queen of France by marriage. Somewhat conveniently she died five months later. Blanche of Burgundy Queen Consort France remained in prison until her husband Charles IV King France I King Navarre became King in 1322 at which time he had their marriage annulled.

After 19 May 1322 [her former husband] Charles IV King France I King Navarre (age 27) and Marie Luxemburg Queen Consort France (age 18) were married. She by marriage Queen Consort of France. She the daughter of Henry Luxemburg VII Holy Roman Emperor and Margaret Brabant Countess Luxemburg and Namur. He the son of [her former father-in-law] Philip IV King France and Joan Blois I Queen Navarre. They were fourth cousins. He a great x 4 grandson of King Henry "Curtmantle" II of England.

On 05 Jul 1324 [her former husband] Charles IV King France I King Navarre (age 30) and Joan Évreux Queen Consort France (age 14) were married. She by marriage Queen Consort of France. She the daughter of Louis I Count Évreux and Margaret Artois Countess Évreux. He the son of [her former father-in-law] Philip IV King France and Joan Blois I Queen Navarre. They were half first cousins. He a great x 4 grandson of King Henry "Curtmantle" II of England. She a great x 2 granddaughter of King Henry III of England.

In 1326 Blanche of Burgundy Queen Consort France (age 29) died.

Froissart Book 1 Chapter 21. 1328. [her former husband] King Charles of France (age 33), son to the [her former father-in-law] fair king Philip, was three times married, and yet died without issue male. The first of his wives was one of the most fairest ladies in all the world, and she was daughter to the [her father] earl of Artois. Howbeit she kept but evil the sacrament of matrimony, but brake her wedlock; wherefore she was kept a long space in prison in the castle Gaillard [Map], before that her husband was made king. And when the realm of France was fallen to him, he was crowned by the assent of the twelve douze-peers¹ of France, and then because they would not that the realm of France should be long without an heir male, they advised by their counsel that the king should be remarried again; and so he was, to the daughter of the emperor Henry of Luxembourg, sister to the gentle king of Bohemia (age 31); whereby the first marriage of the king was fordone, between him and his wife that was in prison, by the licence and declaration of the pope that was then. And by his second wife, who was right humble, and a noble wise lady, the king had a son, who died in his young age, and the queen also at Issoudun [Map] in Berry. And they both died suspiciously, wherefore divers persons were put to blame after privily. And after this, the same king Charles was married again the third time to the daughter (age 18) of his uncle, the lord Louis earl of Evreux, and she was sister to the king of Navarre (age 21), and was named queen Joan. And so in time and space this lady was with child, and in the mean-time the king Charles her husband fell sick and lay down on his death-bed. And when he saw there was no way with him but death, he devised that if it fortuned the queen to be delivered of a son, then he would that the lord Philip of Valois should be his governour, and regent of all his realm, till his son come to such age as he might be crowned king; and if it fortuned the queen to have a daughter, then he would that all the twelve peers of France should take advice and counsel for the further ordering of the realm, and that they should give the realm and regaly to him that had most right thereto. And so within a while after the king Charles died, about Easter in the year of our Lord Mcccxxviii., and within a short space after the queen was delivered of a daughter.

Note 1. Froissart says simply 'les douze pers.'