Λουδοβίκος IX, also known as Saint Louis, was the King of France from 1226 until his death in 1270. He is renowned for his deep faith, commitment to justice, and efforts to improve the lives of his subjects. Louis led two crusades and is remembered for his attempts to unite Christendom. Canonized in 1297, he is the only French king to be declared a saint. Saint Louis is celebrated for his piety and charitable works, including the establishment of hospitals and the promotion of the Catholic Church. His legacy continues to influence French culture and history.