Count of Ponthieu

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 the Conqueror, Duke of Normandy after the battle of Mortemer.^[1][2] 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.

Coat of arms of the Counts of Ponthieu

Counts and Countesses of Ponthieu

• Helgaud III, also Count of Montreuil. d. 926 in battle 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)
• Hugh I, also Count of Montreuil, d. c. 1000.
• Enguerrand I, also Count of Montreuil (c. 1000 – c. 1045)
• Hugh II, also Lord of Abbeville (c. 1045–1052). Father (by one account) of both Enguerrand II and Guy I.
• Enguerrand II (1052–1053). Married Adelaide II daughter of Robert I Duke of Normandy. Succeeded by his brother Guy I:^[3][4][5]
• Guy I, (1053–1100) son of Hugh II. Succeeded in Ponthieu by his daughter (and only surviving child):^[6]
• Agnes (1100 – bef. 1105) b. c. 1080 in Ponthieu, France; d by 1103^[7] Married c. 1087 Robert of Bellême, 3rd Earl of Shrewsbury and Count of Alençon.^[8] Succeeded in Ponthieu by her only child:
• William III Talvas (bef. 1105–20 June 1172), also Count of Alençon. During his lifetime, he ceded Ponthieu to his elder son Guy II; Alençon went to his younger son John I (d February 24, 1191) who was married to Beatrice of Anjou, first cousin of Henry II of England, Count of Anjou.
• Guy II (?–1147). Succeeded by his elder son:
• John I (1147–1191) Succeeded by his son:
• William IV Talvas (1191–1221), also Count of Montreuil. Succeeded by his daughter:
• Mary (1221–1251), also Countess of Montreuil.
  • married Simon of Dammartin (1213 1239) Succeeded by their daughter:
• Joan (1251–1279), also Countess of Montreuil.
  • married Ferdinand III of Castile (1198/1199–1252)
• Eleanor (1279–1290), also Countess of Montreuil.
• Edward II of England (1290–1325), also Count of Montreuil.
• Edward III of England (1325–1336), also Count of Montreuil.
• confiscated by Philip VI of France
• James I, Count of La Marche (1351–1360)
• returned by the Peace of Brétigny
• Edward III of England (1360–1369)
• confiscated again
• Charles VII of France (1403–1422)
• royal domain
• Charles de Valois, Duke of Angoulême (1573–1650)
• Louis Emmanuel de Valois, Duke of Angoulême (1650–1653)
• royal domain
• Charles de Bourbon, Duc de Berry (1710–1714)
• royal domain
• Charles X of France (1830–1836)