Editing Louis IX of France (section)

==Children==
#Blanche (12 July/4 December 1240 – 29 April 1244), died in infancy.{{sfn|Richard|1983|p=xxiv}}
#[[Isabella of France, Queen of Navarre|Isabella]] (2 March 1241 – 28 January 1271), married [[Theobald II of Navarre]].{{sfn|Jordan|2017|p=25}}
#[[Louis of France (1244–1260)|Louis]] (23 September 1243/24 February 1244 – 11 January/2 February 1260). Betrothed to [[Berengaria of Castile, Lady of Guadalajara|Berengaria of Castile]] in Paris on 20 August 1255.{{sfn|Jordan|2017|pp=25–26}}
#[[Philip III of France|Philip III]] (1 May 1245 – 5 October 1285), married firstly to [[Isabella of Aragon, Queen of France|Isabella of Aragon]] in 1262 and secondly to [[Marie of Brabant, Queen of France|Maria of Brabant]] in 1274.
#John (1246/1247 – 10 March 1248), died in infancy.{{sfn|Richard|1983|p=xxiv}}
#[[John Tristan]] (8 April 1250 – 3 August 1270), Count of Valois, married [[Yolande II, Countess of Nevers]].{{sfn|Richard|1983|p=xxiv}}
#[[Peter I, Count of Alençon|Peter]] (1251 – 6/7 April 1284),{{sfn|Richard|1983|p=xxiv}} Count of Perche and Alençon, married [[Joanne of Châtillon]].
#[[Blanche of France, Infanta of Castile|Blanche]] (early 1253 – 17 June 1320), married [[Ferdinand de la Cerda, Infante of Castile]].{{sfn|Richard|1983|p=xxiv}}
#[[Margaret of France, Duchess of Brabant|Margaret]] (early 1255 – July 1271), married [[John I, Duke of Brabant]].{{sfn|Richard|1983|p=xxiv}}
#[[Robert, Count of Clermont|Robert]] (1256 – 7 February 1317), Count of Clermont,{{sfn|Richard|1983|p=xxiv}} married [[Beatrice of Burgundy, Lady of Bourbon|Beatrice of Burgundy]]. The French crown devolved upon his male-line descendant, [[Henry IV of France|Henry IV]] (the first [[House of Bourbon|Bourbon]] king), when the legitimate male line of Philip III died out in 1589.
#[[Agnes of France, Duchess of Burgundy|Agnes]] (1260 – 19/20 December 1327), married [[Robert II, Duke of Burgundy]].{{sfn|Richard|1983|p=xxiv}}

Louis and Margaret's two children who died in infancy were first buried at the [[Cistercian]] [[abbey of Royaumont]]. In 1820 they were transferred and reinterred to [[Saint-Denis Basilica]].{{sfn|Brown|1990|p=810}}