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.
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 II, Count of Armagnac
John II, the Hunchback,( born 1333, died 26 May 1384), Count of Armagnac, of Fézensac, Rodez( 1371 – 1384) and Count of Charolais( 1364 – 1384), Viscount Lomagne and Auvillars, he was the son of John I, Count of Armagnac, of Fezensac and Rodez, Viscount Lomagne and Auvillars and Beatrix de Clermont, great- granddaughter of Louis IX of France.
During the life of his father, he bore the title of lord, and subsequently, Count of Charolais, which he had received from his mother.
Also, during his life, the government of Languedoc was entrusted to him.
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.
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.
Arnold V, Count of Loon
Arnold V de Looz,( died August 22, 1327) was Count of Loon from 1279 to 1323 and Count of Chiny( Arnulf III) from 1299 to 1310.
He was the son of John I, Count of Looz and Mathilde Jülich.
John I, Count of Armagnac
John I of Armagnac (French: Jean d’Armagnac; 1311 – 16 May 1373), son of Bernard VI and Cecilia Rodez, was Count of Armagnac from 1319 to 1373.
In addition to Armagnac he controlled territory in Quercy, Rouergue and Gévaudan.
He was the count who initiated the 14th century expansion of the county.
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.
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.
Anne de Bourbon
Anne de Bourbon (1380 – September 1408) was a daughter of John I, Count of La Marche and his wife Catherine of Vendôme.
She was a member of the House of Bourbon.

Question: What is the date of birth of John I, Count Of Armagnac's father?
Answer: 1270