Alix of Brittany, Dame de Pontarcy, Countess of Blois, was a Breton noblewoman and a member of the House of Dreux as the eldest daughter of John I, Duke of Brittany and Blanche of Navarre. She married John I, Count of Blois. Alix was known for founding religious houses including the Monastery of La Guiche, where she was later buried.

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