King Louis III was a monarch of France who reigned from 1270 to 1285. He was the son of King Louis IX and became king at a young age after his father's death. His reign was marked by efforts to strengthen the monarchy and maintain peace within the kingdom. During his rule, Louis III faced challenges from the nobility and external threats. He worked to consolidate royal power and improve the administration of justice. His reign was relatively short, but he is remembered for continuing the legacy of his father, Saint Louis, in promoting fairness and stability in France.