Margaret of Valois, Countess of Blois
Margaret of Valois( 1295–1342) was a French noblewoman.
She was a daughter of Charles, Count of Valois, and his first wife, Margaret, Countess of Anjou.
She was also a sister of King Philip VI of France.
In 1310, she married Guy I, Count of Blois.
They had three children together:
Charles I, Count of Armagnac
Charles d'Armagnac, born 1425, died June 3, 1497 in Castelnau-de-Montmiral at the age of 72 years, was Count of Armagnac and Rodez from 1473 to 1497.
He was the son of John IV, Count of Armagnac and Rodez, and Isabella d'Évreux.
His older brother, Count John V, was a leader of the League of the Public Weal against King Louis XI of France, causing Charles to be imprisoned for fifteen years.
John was killed in a skirmish, allowing Charles to inherit the title of Count of Armagnac.
John IV, Count of Armagnac
John IV (15 October 1396 – 5 November 1450) was a Count of Armagnac, Fézensac, and Rodez from 1418 to 1450.
He was the son of Bernard VII of Armagnac, Count d'
Armagnac, of Fézensac, Pardiac, and Rodez; and Bonne of Berry.
John IV was involved in the intrigues related to the Hundred Years' War and in conflicts against the King of France.
His father had taken the County of Comminges by force, but John IV could not prevent the second marriage of Marguerite to Mathieu de Foix in 1419.
Subsequently, they took the County of Comminges.
In 1425, he recognized the King of Castile as overlord of Armagnac.
The French king, occupied fighting the English, could not intervene, but did not overlook the affront.
Later, John IV negotiated the marriage of his daughter Isabelle with Henry VI of England, but he backed off from this plan after threats from the king of France.
In 1440, he took part in a revolt of the barons and the Dauphin of France, but the coalition was overcome by Charles VII, who pardoned the insurrectionists.
He asked the Count of Armagnac to give up its kingly formula, but this last was refused.
Charles VII then asked the Dauphin to punish the recalcitrant John IV.
Besieged in L'Isle-Jourdain, John IV was made prisoner and imprisoned in Carcassonne in 1443.
He was pardoned three years later, but his counties were directed by royal officers, and he did not have any more noble capacities until his death.
John V, Count of Armagnac
John V of Armagnac( Fr.:" Jean V, comte d' Armagnac")( 1420 – 5 March 1473), the penultimate Count of Armagnac of the older branch.
He was the son of John IV of Armagnac and Isabella of Navarre.
Bonne of Armagnac
Bonne of Armagnac( 19 February 1399 – 1430/35) was the eldest daughter of Bernard VII, Count of Armagnac and Constable of France, and his wife Bonne of Berry.
Marie of Armagnac
Marie of Armagnac( c. 1420–1473) was a French noblewoman, daughter of John IV of Armagnac and his second wife, Isabella of Navarre.
Through her son, she would eventually become the great- grandmother of Henry IV of France.
Henri, Count of Harcourt
Henri de Lorraine( 20 March 1601 – 25 July 1666, Royaumont Abbey), known as" Cadet la Perle", was a French nobleman.
He was count of Harcourt, count of Armagnac, count of Brionne and viscount of Marsan.
He was the younger son of Charles I, Duke of Elbeuf and his wife Marguerite de Chabot, countess of Charny.
Charles I, Count of Nevers
Charles I, Count of Nevers( 1414 – 25 May 1464), Count of Nevers and Rethel, was the son of Philip II, Count of Nevers, and Bonne of Artois.
Towards the end of the life of Philip III, Duke of Burgundy, Charles fell under suspicion of practising witchcraft, in an effort to supplant Charles, Count of Charolais, as the heir.
Charles I fled to France and died soon after.
He married Marie d' Albret, daughter of Charles II d' Albret on 11 June 1456, but had no legitimate children.
He was succeeded by his brother John.
Bernard VI, Count of Armagnac
Bernard VI,( 1270 – 1319), Count of Armagnac and Fezensac, was the son of Gerald VI, Count of Armagnac, and Mathe de Béarn.
John III, Count of Armagnac
John III of Armagnac (1359 – July 25, 1391) was a Count of Armagnac, of Fézensac and Rodez from 1384 to 1391.
He was the son of John II of Armagnac, and Jeanne of Périgord.
In 1390, John claimed the kingdom of Majorca, but was overcome by the troops of Juan I of Aragon in a battle near Navata.
John III consequently led military actions in Roussillon.
In 1391, he had to leave for Italy in order to go to the assistance of Charles Visconti, Lord of Parma and husband of his sister, Beatrix of Armagnac.
Visconti was in conflict with his acquisitive cousin Gian Galeazzo Visconti, later the duke of Milan, whose ambition was to control the whole of northern Italy.
His army was attacked and decisively beaten by that of Gian Galeazzo Visconti as it passed through Alessandria in Piedmont.
John III was killed in the battle.

Question: When did Charles I, Count Of Armagnac's father die?
Answer: 5 November 1450