ALPHONSE (122o-1271), Count of Toulouse and Poitiers, the son of Louis VIII., king of France, and brother of St. Louis, was born on Nov. 11 1220. He joined the county of Toulouse to his appanage of Poitou and Auvergne, on the death, in Sept. of Raymond VII., whose daughter Jeanne he had married in 1237. He took the cross with his brother, St. Louis, in 1248 and in 1270. In 1252, on the death of his mother, Blanche of Castile, he was joint regent with Charles of Anjou until the return of Louis IX., and took a great part in the negotiations which led to the treaties of Abbeville and of Paris (1258-59). His main work was on his own estates. There he repaired the evils of the Albi gensian war and made a first attempt at administrative centrali zation, thus preparing the way for union with the crown. The charter known as "Alphonsine," granted to the town of Riom, became the code of public law for Auvergne. He died without heirs on his return from the 8th crusade, in Italy, probably at Savona, on Aug. 21 1271.
See B. Ledain, Histoire d'Alphonse, frere de S. Louis et du coma de Poitou sous son administration (1241-71) (Poitou, 1869) ; E. Boutaric, Saint Louis et Alphonse de Poitiers (Paris, 2870) ; A. Molinier, Etude sur l'administration de S. Louis et d'Alphonse de Poitiers (Toulouse, 1880) ; and also his edition of the Correspondance administrative d'Alphonse de Poitiers in the Collection de documents inedits pour servir d l'histoire de France (Paris, 1894 and 2895).