Her brother was the unfortunate Charles, Duke of Orléans, (father of the future Louis XII of France), captured at Agincourt and imprisoned for twenty-five years in England and who during his long captivity, became the greatest poet of the 15th century in the French language.

In 1423 she married Richard of Montfort, son of John IV, Duke of Brittany, and Joanna of Navarre, later Queen of England as wife of Henry Bolingbroke.

She obtained a declaration from the Cardinal of Estouteville that sheltered her liberty and that of her daughters as they moved among the convents and religious monasteries of northern France.

[3][better source needed] However, the claim was disputed by the then Duke of Burgundy, Philip the Good, who succeeded his father John the Fearless in 1419 after the latter's assassination by the agents of Dauphin Charles.

One of the most exquisite examples of fifteenth-century French illumination, this Book of Hours was executed in a complex series of stages, starting with the text as early as 1421, its decoration inspired by diverse sources and artists.