Henry I, c.1008–1060, king of France (1031–60), son and successor of King Robert II. To defend his throne against his mother, his brothers Robert and Eudes, and subsequently against the count of Blois, he secured, at the cost of territorial concessions, the aid of Robert I, duke of Normandy, and of Geoffrey Martel, count of Anjou. After the submission of his brother Robert, Henry unwisely invested him with the duchy of Burgundy, setting up a powerful rival to the French kingdom. He found the chief enemy of his later reign in Robert of Normandy's son William, later William I of England, who successfully resisted two invasions by Henry. Henry was succeeded by his son Philip I.
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