Joan of Navarre (nun)
Joan of Navarre( 1326 – 3 July 1387) was a princess from the French House of Évreux, the eldest child of King Philip III and Queen Joan II of Navarre.
Blanche of Navarre, Queen of France
Blanche of Navarre (1330 – 5 October 1398) was Queen of France as the wife of King Philip VI.
She was the second child and daughter of Queen Joan II of Navarre and King Philip III of Navarre.
She belonged to the House of Évreux, a cadet branch of the House of Capet, and married into the House of Valois, another cadet branch of the House of Capet.
Marie of Valois, Duchess of Calabria
Marie of Valois( 1309 – 23 October 1331), was the eldest daughter of Charles of Valois by his third wife Mahaut of Châtillon.
She was a member of the House of Valois.
One of her five children was Queen Joanna I of Naples.
Joan of Navarre (regent)
Joan of Navarre( 1382 – July 1413) was the heir presumptive to the throne of Navarre in 1402 – 1413, and regent of Navarre in the absence of her father in 1409 – 1411.
She was the eldest child of King Charles III of Navarre by his wife Eleanor, daughter of King Henry II of Castile.
Blanche of Navarre, Countess of Champagne
Blanche of Navarre( ?–1229) was countess and then regent of Champagne and finally also regent of her native kingdom of Navarre.
She was the youngest daughter of Sancho VI of Navarre and Sancha of Castile, who died in 1179, about two years after Blanche's birth.
Her eldest brother, Sancho VII of Navarre, succeeded their father as King of Navarre and was the last male descendant of the first dynasty of Kings of Navarre, the Pamplona dynasty, dying childless.
Her elder sister Berengaria of Navarre married Richard I of England.
Isabella of Navarre, Viscountess of Rohan
Isabel d' Albret of Navarre( 1512–1555) was the daughter of John III of Navarre( died 1516) and Catherine I of Navarre, sister and heiress of Francis Phoebus, King of Navarre.
As heir apparent, her brother rose to the throne in 1517 as Henry II of Navarre, grandfather of King Henry III of Navarre( Henry IV of France).
Joan of Valois, Countess of Beaumont
Joan of Valois (1304–1363) was the daughter of Charles of Valois and his second wife Catherine I of Courtenay, titular empress of Constantinople.
Half sister to Philip VI of Valois, in around 1320 she married Robert III of Artois, Count of Beaumont-le-Roger and seigneur of Conches.
They had five known children:
Robert III of Artois had attempted to recover the title of count of Artois, which had been taken from him by his aunt Mahaut of Artois, but was condemned and exiled in 1331 for making and presenting forged documents in the process of filing against her.
Joan of Valois and their children were therefore imprisoned by order of her half-brother Philip VI.
René I, Viscount of Rohan
René I de Rohan,( 1516–1552) 18th Viscount of Rohan, Viscount and Prince de Léon, and Marquis de Blain married Isabella of Navarre daughter of jure uxoris King John III of Navarre and Catherine of Navarre, Queen of Navarre.
Charles II of Navarre
Charles II (10 October 1332 – 1 January 1387), called Charles the Bad, was King of Navarre 1349–1387 and Count of Évreux 1343–1387.
Besides the Pyrenean Kingdom of Navarre, he had extensive lands in Normandy, inherited from his father, Count Philip of Évreux, and his mother, Queen Joan II of Navarre, who had received them as compensation for resigning her claims to France, Champagne, and Brie in 1328.
Thus, in Northern France, Charles possessed Évreux, Mortain, parts of Vexin, and a portion of Cotentin.
He was a major player at a critical juncture in the Hundred Years' War between France and England, repeatedly switching sides in order to further his own agenda.
His horrific death by burning was widely considered God's justice upon him.
Joan of Valois, Queen of Navarre
Joan of France, also known as "Joan" or "Joanna of Valois" (24 June 1343, Châteauneuf-sur-Loire – 3 November 1373, Évreux), was the daughter of John II of France (called "The Good"), and his first wife, Bonne of Luxembourg.
She married Charles II of Navarre (called "The Bad"), and became Queen-consort of Navarre.

Question: When did Joan Of Valois, Queen Of Navarre's husband die?
Answer: 1 January 1387