Eleanor of Aquitaine, Duchess of Aquitaine and Gascony and Countess of Poitou (1122 – April 1 1204) was one of the wealthiest and most powerful women in Europe during the High Middle Ages. She was Queen consort of both France and England in turn and the mother of both King Richard I and King John. She is well known for her involvement in the Second Crusade. Wikipedia
The definitive Wikipedia entry for Eleanor Of Aquitaine. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Eleanor_of_Aquitaine