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How did Philip IV of France become king of Navarre?
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Philip IV
Philip IV, detail of the statue from his tomb, 14th century; in the abbey church at Saint-Denis, France.
Philip IV of France became king of Navarre (as Philip I) through his marriage to Joan I, who was the queen of Navarre and the sole heir of King Henry I.
The couple married on August 16, 1284, which brought Joan's rights to the throne of Navarre, as well as the countships of Champagne and Brie, to the French crown. Following this union, Philip IV ruled Navarre jointly with Joan I from 1284 until her death in 1305.12