Joan II, Countess of Auvergne

Joan II was the countess of Auvergne and Boulogne from 1394 until 1424 as well as the duchess of Berry by marriage. She was the daughter of John II, Count of Auvergne, and second wife of John, Duke of Berry. She is arguably most famous for saving the life of her nephew King Charles VI of France, during the disastrous Bal des Ardents.