Joanna of Dreux, Countess of Penthievre and Duchess of Brittany (born 1319)

Joan of Penthièvre

Duchess of Brittany from 1341 to 1365

Joan of Penthièvre, sometimes called Joan the Lame, reigned as Duchess of Brittany together with her husband, Charles of Blois, between 1341 and 1364. Her ducal claims were contested by the House of Montfort, which prevailed only after an extensive civil war, the War of the…