Blanche of Castile (d. 1252)
Blanche of Castile (Spanish: Blanca de Castilla; 4 March 1188 – 27 November 1252) was Queen consort of France by marriage to Louis VIII. She acted as regent twice during the reign of her son, Louis IX: during his minority from 1226 until 1234, and during his absence from 1248 until 1252. She was born in Palencia, Spain, 1188, the third daughter of Alfonso VIII, King of Castile, and Eleanor of England.