Hugh the Great, d. 956, French duke; son of King Robert I and father of Hugh Capet. Excluded from the succession on his father's death by his brother-in-law Raoul, he supported the candidacy of Louis IV, the Carolingian heir, after Raoul's death (936). Hugh hoped to rule through this weak king who had been raised in England. Louis IV attempted to increase his strength, however, and his reign was marked by warfare between king and vassal, in which Hugh, excommunicated (948) at the insistence of Louis, was forced to submit (950). Although Hugh never held the title of king, his vast possessions made him the virtual ruler of France.
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