Margaret of Britain
John IV, Duke of Brittany's daughter
Grandchildren: Charles, Count of Angoulême, Françoise de Dinan, Jean IV de Rieux, and more
Grandparents: John of Montfort, Joan of Valois, Queen of Navarre, and Joanna of Flanders
Great grandchildren: Francis I of France, Marguerite de Navarre, Louis III de Rohan, Seigneur de Guéméné, de Montbazon, and more
Great-grandparents: John II of France, Arthur II, Duke of Brittany, Bonne of Luxembourg, and more
Children: Alain de Rohan and Marguerite of Rohan
Partner: Alain IX de Rohan (1407–)