Margaret of Béarn Viscountess and Countess (1245–1319) Parents Martha, Viscountess of Marsan Gaston VII, Viscount of Béarn Children Constance de Foix Marguerite de Foix Gaston I, Count of Foix Brunissende of Foix Mathe de Foix Siblings Mathe de Montcade Constance of Béarn Guillelme de Montcada Partners Roger-Bernard III, Count of Foix
