The County of Ponthieu (French: Comté de Ponthieu, Latin: Comitatus Pontivi), 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 (comte de Ponthieu) became a courtesy title for the royal family.
Counts and Countesses of Ponthieu
Coat of arms of the Counts of Ponthieu
Helgaud III, also Count of Montreuil. d. 926 in combat against the Normans.
Herluin II or Herlouin, also Count of Montreuil. (926–945)
Roger or Rotgaire or Notgard, also Count of Montreuil. (dates unknown)
William I, also Count of Montreuil. (dates unknown)
Hildouin, also Count of Montreuil. (dates unknown)
^George Edward Cokayne, The Complete Peerage; or, A History of the House of Lords and all its Members from the Earliest Times, Vol. XI, ed. Geoffrey H. White (The St. Catherine Press, Ltd., London, 1949), p. 695
Dunbabin, Jean (2000). France in the Making 843-1180. Oxford: OUP. ISBN0-19-820846-4.
Vitalis, Odericus (1853). Leopold Delisle (ed.). London: Henry Bohn. ISBN1-154-27527-2. Missing or empty |title= (help)
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