Barbara Villiers
Barbara Villiers (Lady Castlemaine) (1641-1709), the first and at the same time one of the most important mistresses of Charles II. She was known as a political entity and especially known for her hatred against Edward Hyde, Earl of Clarendon. Her delight on his downfall (1667) is recorded in Pepys diary. In 1670 she was created countess of Southhampton and duchess of Cleveland. In 1671, however, she had been supplanted at court by Louise de Querouaille, duchess of Portsmouth. Barbara Villiers bore Charles three sons and either one or two daughters.
“Barbara Villiers”. Free Online Encyclopedia. 20. Jul. 2009 <http://www.1911encyclopedia.org/Barbara_Villiers,_duchess_of_Cleveland>
“Barbara Villiers”. 2009, Dictionary.com. 20. Jul. 2009 <http://www.reference.com/browse/duchess>