Henrietta Harley, Countess of Oxford and Countess Mortimer

English noblewoman (1694-1755) (1694–1755)

Parents

• John Holles, 1st Duke of Newcastle
• Margaret Holles, Duchess of Newcastle-upon-Tyne

Children

• Margaret Cavendish Bentinck, Duchess of Portland

Partners

• Edward Harley, 2nd Earl of Oxford and Earl Mortimer