Louis VIII, king of France (b. 1187)
Louis VIII (5 September 1187 – 8 November 1226), nicknamed The Lion (French: Le Lion), was King of France from 1223 to 1226. From 1216 to 1217, he invaded and claimed the Kingdom of England. Louis participated in the Albigensian Crusade in southern France, driving it to its successful and deadly conclusion. He was the only surviving son of King Philip II of France by his first wife, Isabelle of Hainaut, from whom he inherited the County of Artois.

While Louis VIII only briefly reigned as king of France, he was an active leader prior to accession; having notably helped his father Philip crush an invasion attempt by a coalition of European states through his deeds at the siege of Roche-au-Moine in 1214. During the First Barons' War against King John of England, following a request from some of the rebellious English barons, the prince sailed to England with an army on 14 June 1216 despite discouragement from his father Philip and Pope Innocent III. He captured Winchester and soon controlled over half of the English kingdom. He was proclaimed "King of England" by the rebellious barons in London on 2 June 1216 but was actually never crowned king. He was excommunicated by the Pope, renounced his claim and was eventually repelled by the English following King John's death. Louis then successfully launched in 1217 the conquest of Guyenne, leaving the kings of England with the region of Gascony as their only remaining continental possession. He died in 1226 and was succeeded by his son Louis IX.