Louis of France Eldest son of King Louis IX; heir and regent of France (1244–1260) Parents Margaret of Provence Louis IX of France Children Siblings Philip III of France Peter, Count of Perche and Alençon Robert John Tristan, Count of Valois John of France Blanche de France Isabella of France, Queen of Navarre Agnes of France, Duchess of Burgundy Margaret of France, Duchess of Brabant Blanche of France, Infanta of Castile
