Louis IX of France King of France from 1226 to 1270 (1214–1270) (1214–1270) Parents Blanche of Castile Louis VIII of France Children Louis of France Philip III of France Agnes of France, Duchess of Burgundy John of France Blanche de France Margaret of France, Duchess of Brabant Blanche of France, Infanta of Castile John Tristan, Count of Valois Peter, Count of Perche and Alençon Isabella of France, Queen of Navarre Robert Siblings John Tristan, Count of Anjou and Maine Alphonse, Count of Poitiers Philip of France Robert I, Count of Artois Charles I of Naples Isabelle of France Philippe-Dagobert of France Philip of France Partners Margaret of Provence
