Philip III of France, also known as Philip the Bold, was the King of France from 1270 to 1285. He was the son of Louis IX and succeeded his father after his death during the Eighth Crusade. Philip's reign was marked by efforts to strengthen royal authority and manage the kingdom's finances. During his rule, Philip III focused on consolidating power and expanding French territories. He engaged in conflicts with England and worked to secure alliances through marriage. His reign laid the groundwork for future developments in the French monarchy, influencing the political landscape of medieval Europe.