Isabella, Countess of Foix
Isabella of Foix also known as" Isabella of Foix- Castelbon"( before 2 November 1361- 1428) was sovereign Countess of Foix and Viscountess of Béarn from 1399 until 1428.
She was Countess of Foix in her own right, but shared power with her husband and later with her son.
She succeeded as countess along with her husband upon the death of her childless brother Matthew.
Catherine of Foix, Countess of Candale
Catherine de Foix (c. 1455 – died before 1494) was a French noblewoman.
She was a daughter of Gaston IV, Count of Foix and Eleanor of Navarre, and granddaughter of John II of Aragón and Blanche I of Navarre.
Catherine married her second cousin Gaston de Foix, Count of Candale.
They had four children:
John of Foix, Viscount of Narbonne
John of Foix( 1450 – 1500, Étampes, France) was a younger son of Count Gaston IV of Foix and Queen Eleanor of Navarre.
His elder brother was Gaston, Prince of Viana.
Gaston II, Count of Foix
Gaston II of Foix-Béarn
( 1308 – September 1343), son of Gaston I of Foix- Béarn and Jeanne of Artois, was the 10th Count of Foix.
In 1315, after the death of his father Gaston I, he became Count of Foix, and Viscount of Béarn, Marsan, Gabardan, Nébouzan and Lautrec under the regency of his mother, Jeanne of Artois.
Count Gaston II imprisoned his mother Jeanne d'Artois in 1331 at the Château of Foix, being later moved in turn to Orthez, Lourdes and Carbonne.
Gaston II married his cousin Eleanore de Comminges, daughter of Bernard VII of Comminges and Laura de Montfort.
Eleanore de Comminges brought, as a dowry, her rights to the County of Bigorre.
They had one son: Gaston III Febus, who succeeded his father as Count of Foix.
Gaston II had several illegitimate children:
His actions in 1339 during the conquest of the castle of Tartas resulted in him receiving the title of Viscount of Lautrec.
He was at the Siege of Algeciras( 1342 – 44) in southern Spain, which was led by King Alfonso XI of Castile.
He died of the plague at Seville in 1343.
Agnès of Navarre
Agnès of Navarre( 1334 – 1396) was the daughter of Philip III of Navarre and Joan II of Navarre, and became Countess of Foix on marriage to Gaston III, Count of Foix.
She was rumoured to have had an affair with poet Guillaume de Machaut and so inspired his poem" Le Voir Dit".
Gaston of Foix, Duke of Nemours
Gaston de Foix, duc de Nemours( 10 December 1489 – 11 April 1512), also known as" The Thunderbolt of Italy," was a French military commander noted mostly for his brilliant six- month campaign from 1511 to 1512 during the War of the League of Cambrai.
Born in Mazères, County of Foix, he was the second child but only son of John of Foix, Viscount of Narbonne and Marie d'Orléans.
His older sister was Germaine of Foix, Queen consort of Aragon as the second wife of Ferdinand II.
His paternal grandparents were Gaston IV of Foix- Grailly and Queen regnant Eleanor of Navarre.
His maternal grandparents were Charles, Duke of Orléans and Marie of Cleves.
His only maternal uncle was Louis XII of France.
Pierre de Foix, le jeune
Peter of Foix the Younger( Fr.:" Pierre de Foix, le jeune")
( 7 February 1449 –10 August 1490)( called the Cardinal of Foix) was a French Roman Catholic bishop and cardinal.
Eleanor of Navarre
Eleanor of Navarre (and)
(2 February 1426 – 12 February 1479), was the regent of Navarre from 1455 to 1479, then briefly the queen regnant of Navarre in 1479.
She was crowned on 28 January 1479 in Tudela.
Theodred II (Bishop of Elmham)
Theodred II was a medieval Bishop of Elmham.
The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997.
John I, Count of Foix
John I, Count of Foix also known as" Jean de Foix- Grailly"( 1382 – 4 May 1436) was Count of Foix from 1428 until his death in 1436.
He succeeded his mother Isabella, Countess of Foix.
His father was Archambaud de Grailly.

Question: What is the date of birth of Catherine Of Foix, Countess Of Candale's mother?
Answer: 2 February 1426