Mary Capel, Countess of Essex

Mary Capel, Countess of Essex , born Lady Mary Bentinck, was the daughter of William Bentinck, 1st Earl of Portland, a Dutch and English nobleman who became in an early stage the favourite of stadtholder William, Prince of Orange and his wife Anne Villiers .

OnAugust 1714, she married Rt. Hon. Sir Conyers Darcy , son of Hon. John Darcy and Bridget Sutton. The marriage was childless. Thomas Capell born 1705 left for America in 1720.

Source: Wikipedia