Peter I, Count of Saint-Pol Count of Brienne, Conversano and Saint-Pol (1390-1433) (1390–1433) Parents Margaret of Brienne John of Luxembourg, Lord of Beauvoir Children Catherine of Luxembourg-Saint-Pol Louis de Luxembourg, Count of Saint-Pol Isabel of Luxembourg Jacques of Luxembourg Jacquetta of Luxembourg Thibaud of Luxembourg Siblings John II of Luxembourg, Count of Ligny Lewis of Luxembourg Jeanne de Luxembourg Partners Margherita del Balzo