I Pedigree of the Viscounts of Béarn, Counts of Foix
Roger Bernard = Margaret da. and heiress Count of Foix | of Gaston VII of Béarn d. 1302 | | +——+ | Gaston VIII of Béarn d. 1316 | +——+——+ | | Gaston IX = Eleanor of Roger Bernard of Béarn | Cominges Visc. Castelbon d. 1343 | d. 1349 | | +——+ | | | Gaston Phœbus X | of Béarn Roger Bernard d. 1391 | +——+ | | Matthew Isabella = Archibald de Gralli Visc. Castelbon heiress of | Captal de Buch d. 1398 Béarn | d. 1412 d. 1426 | | +——+ | John of Béarn d. 1436 | Gaston XI = Leonora of of Béarn | Navarre d. 1472 | heiress | d. 1479 +——+——+ (See Table II) | | Francis Phœbus Catherine = Jean d’Albret K. of Navarre heiress | d. 1516 d. 1483 d. 1517 | | Marguerite = Henri d’Albret and Navarre de France | d. 1555 | Antoine de = Jeanne d’Albret Bourbon | heiress d. 1562 | d. 1572 | Henri de Navarre IV of France d. 1610