Alphonse or Alfonso (11 November 1220 – 21 August 1271) was the Count of Poitou from 1225 and Count of Toulouse (as Alphonse II) from 1249. As count of Toulouse, he also governed the Marquisate of Provence.
. . . Alphonse, Count of Poitiers . . .
Born at Poissy, Alphonse was a son of Louis VIII, King of France and Blanche of Castile.[1] He was a younger brother of Louis IX of France and an older brother of Charles I of Anjou. In 1229, his mother, who was regent of France, forced the Treaty of Paris on Raymond VII of Toulouse after his rebellion.[2] It stipulated that a brother of King Louis was to marry Joan of Toulouse, daughter of Raymond VII of Toulouse, and so in 1237 Alphonse married her.[3] Since she was Raymond’s only child, they became rulers of Toulouse at Raymond’s death in 1249.[4]
By the terms of his father’s will Alphonse received an appanage of Poitou and Auvergne.[5] To enforce this Louis IX won the battle of Taillebourg in the Saintonge War together with Alphonse against a revolt allied with king Henry III of England, who also participated in the battle.[6]
. . . Alphonse, Count of Poitiers . . .