Margaret III, Countess of Flanders
Margaret of Dampierre was the last Countess of Flanders of the House of Dampierre, Countess of Artois and Countess Palatine of Burgundy and twice Duchess consort of Burgundy. She was the only surviving child and heir of Louis de Mle, Count of Flanders, Count of Nevers, and Count of Rethel and his wife Margaret of Brabant, Countess of Flanders.
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Source: Wikipedia