Gilles of Brittany
Gilles of Brittany (1420 - 25 April 1450) was a Breton prince and Lord of Chantocé.
He was the son of John V of Brittany and Joan of France, and the younger brother of the dukes Francis I and Peter II.
John V, Duke of Brittany
John V, sometimes numbered as VI, (24 December 1389 – 29 August 1442) bynamed John the Wise , was Duke of Brittany and Count of Montfort from 1399 to his death.
His rule coincided with the height of the Hundred Years' War between England and France.
John's reversals in that conflict, as well as in other internal struggles in France, served to strengthen his duchy and to maintain its independence.
His alternative regnal name, John VI, as he is known traditionally in old English sources, comes from English partisan accounting as to who was the rightful duke of Brittany during the War of the Breton Succession (1341–65), which had preceded the rule of his father.
Although he faced problems which had lingered from it, his rule as duke was mostly unchallenged.
Without significant internal and foreign threats, John V reinforced ducal authority, reformed the military, constructed a coherent method of taxation, and established diplomatic and trade contacts with most of Western Europe.
John V was also a patron of the arts and the Church, and funded the construction of several cathedrals.
He is known for creating the "Lycée Lesage" in Vannes.
Guerech, Duke of Brittany
Guerech of Brittany, was Count of Nantes and Duke of Brittany from 981 to 988.
Marie of Brittany, Countess of Saint-Pol
Marie of Brittany( 1268–1339) was the daughter of John II, Duke of Brittany, and Beatrice of England.
She is also known as Marie de Dreux.
Maria of Brabant, Duchess of Bavaria
Maria of Brabant( 1226–1256) was a daughter of Henry II, Duke of Brabant, and Maria of Swabia.
She married Louis II, Duke of Bavaria, being the first of three wives.
Margaret of Foix
Margaret of Foix( French:" Marguerite de Foix"; c. 1449 – 15 May 1487) was Duchess of Brittany from 1474 to 1486 by marriage to Francis II, Duke of Brittany.
Françoise de Dinan
Françoise de Dinan( 1436- 1499), was a French heiress, courtier and educator.
She was the governess of Anne of Brittany.
She was the daughter and heir of Jacques de Dinan( d. 1444), lord of Beaumanoir and chamberlain at the court of Brittany, and Catherine de Rohan.
Sh was also the heir of her paternal uncle Bertrand de Dinan( d. 1444), Marshall of Bretagne, Lord of Montafilant, Chateaubriant and Huguetières.
She was abducted by and forced to marry Gilles of Brittany, brother of Francis I, Duke of Brittany and Peter II, Duke of Brittany, in 1444.
She was widowed in 1450, when her spouse was imprisoned and died on the instigation of Arthur de Montauban, who wished to marry her.
By the help of Françoise d'Amboise, she married Guy XIV de Laval in 1451.
In 1488, she was appointed governess to Anne of Brittany and her sister Isabelle.
She played an active role on the political marriage arrangements surrounding Anne.
In 1494, she remarried the noble Jean de Proisy.
Charles II, Duke of Bourbon
Charles II, Duke of Bourbon( Château de Moulins, 1434 – September 13, 1488, Lyon), was Archbishop of Lyon from an early age and a French diplomat under the rule of Louis XI of France.
He had a 2- week tenure as Duke of Bourbon in 1488, being ousted afterward by his younger brother and successor, Peter II, Duke of Bourbon.
Peter II, Duke of Brittany
Peter II (in Breton Pêr II, in French Pierre II) (1418–1457, Nantes/Naoned), was Duke of Brittany, Count of Montfort and titular earl of Richmond, from 1450 to his death.
He was son of Duke John VI and Joan of France, and a younger brother of Francis I.
Blanche of Brittany
Blanche of Brittany( 1271 – 1327) was a daughter of John II, Duke of Brittany, and his wife Beatrice of England.
She is also known as Blanche de Dreux.
Through her mother she was the granddaughter of King Henry III of England and Eleanor of Provence.

Question: When was Peter Ii, Duke Of Brittany's father born?
Answer: 24 December 1389