Philip III (Philip the Bold), 1245–85, king of France (1270–85), son and successor of King Louis IX. He secured peaceful possession of Poitou, Auvergne, and Toulouse by a small cession (1279) to England. The marriage (1284) of his son (later Philip IV) to Joan of Navarre and Champagne brought the first union of France with these territories. To gain a throne for another son, he invaded (1285) the kingdom of Aragón but was forced to retreat and died on the march. Philip's reign was dominated by his father's officials and policies.
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