Joan of France (1391–1433)
| Joan of Valois | |
|---|---|
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|
| Duchess of Brittany | |
| Tenure | 1 November 1399 – 27 September 1433 |
| Born |
24 January 1391 Château de Melun, Seine-et-Marne, Kingdom of France |
| Died | 27 September 1433 (aged 42) Vannes, Morbihan, Duchy of Brittany |
| Burial | Vannes Cathedral |
| Spouse | John V, Duke of Brittany |
| Issue | Anne Isabelle, Countess of Laval Margaret Francis I Catherine Peter II, Duke of Brittany Gilles, Lord of Chantocé |
| House | House of Valois |
| Father | Charles VI of France |
| Mother | Isabeau of Bavaria |
| Religion | Roman Catholicism |
Joan of France (24 January 1391 – 27 September 1433) was Duchess of Brittany through her marriage to John V. She was a daughter of Charles VI of France and Isabeau of Bavaria.
Joan married John V, Duke of Brittany in 1396. Three years after the wedding, her spouse became duke and she duchess of Brittany.
As duchess, Joan is perhaps most known for her role during the conflict between John V and the Counts of Penthièvre. The Penthièvre branch had lost the Breton War of Succession in the 1340s. As a result, they lost the ducal title of Brittany to the Montforts. The conclusion to the conflict took many years to confirm until 1365 when the Treaty of Guérande was signed. Despite the military loss and the diplomatic treaty, the Counts of Penthièvre had not renounced their ducal claims to Brittany and continued to pursue them. In 1420, they invited John V to a festival held at Châtonceaux. He accepted the invitation, but when he arrived, he was captured and kept prisoner.
The Counts of Penthiève then spread rumours of his death, and moved him to a new prison each day. Joan of France called upon all the barons of Brittany to respond. They besieged all the castles of the Penthièvre family one by one. Joan ended the conflict by seizing the dowager countess of Penthièvre, Margaret of Clisson, and forcing her to have the duke freed.
A Book of Hours by the Bedford Master, Heures Lamoignon, was dedicated to her.
She had seven children:
Her most notable siblings were:
Joan died in 1433, during her husband's reign.
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