Eleanor of Aquitaine (French: Aliénor d'Aquitaine or Éléonore d'Aquitaine; Occitan: Alienòr d'Aquitània [aljeˈnɔɾ dakiˈtanjɔ]; Latin: Helienordis, Alienorde or Alianor; c. 1124 – 1 April 1204) was duchess of Aquitaine from 1137 to 1204, queen of France from 1137 to 1152 as the wife of King Louis VII, and queen of England from 1154 to 1189 as the wife of King Henry II. As the reigning duchess of Aquitaine, she ruled jointly with her husbands and two of her sons, Kings Richard I and John of England. As the heiress of the House of Poitiers, which controlled much of southwestern France, she was one of the wealthiest and most powerful people in Western Europe during the High Middle Ages. The eldest child of Duke William X of Aquitaine and Aénor de Châtellerault, Eleanor became duchess upon her father's death in 1137.