Editing Louis VIII of France (section)

==Marriage and issue==
On 23 May 1200, Louis married [[Blanche of Castile]]. They had:
# Philip (9 September 1209 {{endash}} 30 June 1218),{{sfn|Richard|1992|p=xxiv}} betrothed in July 1215 to [[Agnès II, Countess of Nevers|Agnes of Donzy]]{{sfn|Pollock|2015|p=81}}
# Alphonse (26 January 1213, died shortly after birth), twin of John{{sfn|Richard|1992|p=xxiv}}
# John (26 January 1213, died shortly after birth), twin of Alphonse{{sfn|Richard|1992|p=xxiv}}
# [[Louis IX of France|Louis]] ([[Poissy]], 25 April 1214 {{endash}} 25 August 1270, [[Tunis]]),{{sfn|Richard|1992|p=xxiv}} King of France as successor to his father.
# [[Robert I, Count of Artois|Robert]] (25 September 1216 {{endash}} 9 February 1250, killed in battle, [[Mansoura, Egypt|Mansoura]], Egypt), Count of [[Artois]]{{sfn|Richard|1992|p=xxiv}}
# John Tristan (21 July 1219 {{endash}} 1232),{{sfn|Richard|1992|p=xxiv}} Count of [[County of Anjou|Anjou]] and [[Maine (province)|Maine]], betrothed in March 1227 to Yolande of [[Brittany]].
# [[Alphonse, Count of Poitiers|Alphonse]] (Poissy, 11 November 1220 {{endash}} 21 August 1271, Corneto), Count of [[Poitou]] and [[Auvergne]], and by marriage, of [[Toulouse]]{{sfn|Richard|1992|p=xxiv}}
# Philip Dagobert (20 February 1222 {{endash}} 1232){{sfn|Richard|1992|p=xxiv}}
# [[Saint Isabelle of France|Isabelle]] (16 March 1225 {{endash}} 23 February 1270){{sfn|Richard|1992|p=xxiv}}
# Stephen (31 December 1225 {{endash}} 21 March 1227){{sfn|Richard|1992|p=xxiv}}
# [[Charles I of Naples|Charles]] (posthumously 21 March 1227 {{endash}} 7 January 1285), Count of Anjou and Maine, by marriage Count of [[Provence]] and [[Forcalquier]].{{sfn|Richard|1992|p=xxiv}} [[King of Sicily]] from 1266.