Joan of France Duchess of Berry
briefly Queen of France as wife of King Louis XII, in between the death of her brother, King Charles VIII, and the annulment of her marriage.
After that, she retired to her domain, where she soon founded the monastic Order of the Sisters of the Annunciation of Mary. From this Order later sprang the religious congregation of the Apostolic Sisters of the Annunciation, founded in 1787 to teach the children of the poor. She was canonized on 28 May 1950 and is known in the Roman Catholic Church as Saint Joan of Valois, O.Ann.M