In 1269 [her father] Henry I King Navarre (age 25) and [her mother] Blanche Capet Queen Navarre (age 21) were married. She the daughter of [her grandfather] Robert Capet Count of Artois and [her grandmother] Matilda Reginar Countess Saint Pol (age 45). He the son of [her grandfather] Theobald IV King Navarre and [her grandmother] Margaret Bourbon Queen Consort Navarre. They were half third cousins. He a great x 4 grandson of King William "Conqueror" I of England. She a great x 2 granddaughter of King Henry "Curtmantle" II of England.

On 14 Jan 1273 Joan Blois I Queen Navarre was born to Henry I King Navarre (age 29) and Blanche Capet Queen Navarre (age 25). She a great x 3 granddaughter of King Henry "Curtmantle" II of England.

On 22 Jul 1274 [her father] Henry I King Navarre (age 30) died. His daughter Joan Blois I Queen Navarre (age 1) succeeded I Queen Navarre.

On 03 Feb 1276 [her step-father] Edmund "Crouchback" Plantagenet 1st Earl of Leicester 1st Earl Lancaster (age 31) and [her mother] Blanche Capet Queen Navarre (age 28) were married. She by marriage Countess Lancaster. She the daughter of [her grandfather] Robert Capet Count of Artois and [her grandmother] Matilda Reginar Countess Saint Pol (age 52). He the son of King Henry III of England and Eleanor of Provence Queen Consort England (age 53). They were second cousin once removed. She a great x 2 granddaughter of King Henry "Curtmantle" II of England.

On 16 Aug 1284 Philip IV King France (age 16) and Joan Blois I Queen Navarre (age 11) were married. She by marriage Queen Consort of France. She the daughter of Henry I King Navarre and Blanche Capet Queen Navarre (age 36). He the son of King Philip III of France (age 39) and Isabella Barcelona Queen Consort France. They were second cousins. He a great x 3 grandson of King Henry "Curtmantle" II of England. She a great x 3 granddaughter of King Henry "Curtmantle" II of England.

On 05 Oct 1285 [her father-in-law] King Philip III of France (age 40) died. On 05 Oct 1285 His son [her husband] Philip IV King France (age 17) succeeded IV King France: Capet. Joan Blois I Queen Navarre (age 12) by marriage Queen Consort of France.

On 04 Oct 1289 [her son] Louis X King France I Navarre was born to [her husband] Philip IV King France (age 21) and Joan Blois I Queen Navarre (age 16). Coefficient of inbreeding 2.10%.

On 16 Aug 1290 [her brother-in-law] Charles Valois I Count Valois (age 20) and Margaret Capet Countess Valois (age 17) were married. She by marriage Countess Valois. He the son of [her father-in-law] King Philip III of France and Isabella Barcelona Queen Consort France. They were second cousins. He a great x 3 grandson of King Henry "Curtmantle" II of England. She a great x 3 granddaughter of King Henry "Curtmantle" II of England.

Around 1293 [her son] Philip V King France I King Navarre was born to [her husband] Philip IV King France (age 24) and Joan Blois I Queen Navarre (age 19). Coefficient of inbreeding 2.10%.

On 19 Jun 1294 [her son] Charles IV King France I King Navarre was born to [her husband] Philip IV King France (age 26) and Joan Blois I Queen Navarre (age 21). Coefficient of inbreeding 2.10%.

In 1295 [her daughter] Isabella of France Queen Consort England was born to [her husband] Philip IV King France (age 26) and Joan Blois I Queen Navarre (age 21). Coefficient of inbreeding 2.10%.

In 1298 [her brother-in-law] Louis I Count Évreux (age 21) was created I Count Évreux.

On 25 May 1300 Rudolph Habsburg III Duke Austria (age 18) and [her sister-in-law] Blanche Capet Duchess Austria (age 22) were married. She by marriage Duchess Austria. She the daughter of [her father-in-law] King Philip III of France and Maria of Brabant Queen Consort France (age 44). He the son of Albert Habsburg I Duke Austria (age 44) and Elizabeth Carinthia Duchess Austria. She a great x 3 granddaughter of King Henry "Curtmantle" II of England.

In 1302 [her brother-in-law] Charles Valois I Count Valois (age 31) and Catherine Courtenay Countess Valois (age 27) were married. She by marriage Countess Valois. He the son of [her father-in-law] King Philip III of France and Isabella Barcelona Queen Consort France. They were third cousin once removed. He a great x 3 grandson of King Henry "Curtmantle" II of England.

On 02 May 1302 [her mother] Blanche Capet Queen Navarre (age 54) died.

In or before 1303 [her brother-in-law] Louis I Count Évreux (age 26) and Margaret Artois Countess Évreux (age 17) were married. She by marriage Countess Évreux. He the son of [her father-in-law] King Philip III of France and Maria of Brabant Queen Consort France (age 46). They were second cousin once removed. He a great x 3 grandson of King Henry "Curtmantle" II of England. She a great granddaughter of King Henry III of England.

On 01 Mar 1305 [her sister-in-law] Blanche Capet Duchess Austria (age 27) died.

On 02 Apr 1305 Joan Blois I Queen Navarre (age 32) died.

On 29 Nov 1314 [her former husband] Philip IV King France (age 46) died. On 29 Nov 1314 His son [her son] Louis X King France I Navarre (age 25) succeeded X King France: Capet. [her daughter-in-law] 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.