County of Ponthieu

The County of Ponthieu, centered on the mouth of the Somme, became a member of the Norman group of vassal states when Count Guy submitted to William of Normandy after the battle of Mortemer. It eventually formed part of the dowry of Eleanor of Castile and passed to the English crown. Much fought-over in the Hundred Years' War, it eventually passed to the French royal domain, and the title Count of Ponthieu became a courtesy title for the royal family.

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