Queen Blanche of Castile was born in 1188 and became the queen consort of King Louis VIII of France. She was known for her strong leadership and political acumen, especially during her husband's absence. After Louis VIII's death in 1226, she served as regent for her son, King Louis IX, guiding him through his early reign. Blanche was a devout Christian and supported the Catholic Church, promoting religious reforms and the establishment of monasteries. Her influence helped shape the political landscape of France during the 13th century, and she is remembered as a significant figure in medieval history.