John Holles, 1st Duke of Newcastle was an English peer and politician. He was styled Lord Houghton from 1666 until he became Earl of Clare in 1689. He was created Duke of Newcastle in 1694 in recognit
Holles, Duke of Newcastle-upon-Tyne
Tankard with the arms, supporters, coronet, and motto of Holles
Detail of the monument to Holles in Westminster Abbey
Henrietta Harley, Countess of Oxford and Countess Mortimer was an English noblewoman, the only child and heiress of John Holles, 1st Duke of Newcastle and his wife, the former Lady Margaret Cavendish,
John Holles, 1st Duke of Newcastle
…estates from his relative, Denzil Holles, 3rd Baron Holles. By 1694, his income was reckoned to be £40,000 per year. Holles and Cavendish had one child, Lady Henrietta Cavendish Holles (1694–1755), who married the 2nd Earl of Oxford and Mortimer and was mother to Margaret Bentinck, Duchess of Portland. In 1710 he purchased Wimpole…
Henrietta Harley, Countess of Oxford and Countess Mortimer (1694–1755), by John Wootton