Mary Montagu, Duchess of Montagu (1711–1775)
…of John Montagu, 2nd Duke of Montagu, on whose death in 1749 her husband inherited the family estates and took the surname "Montagu". Her mother was Lady Mary Churchill, daughter of John Churchill, 1st Duke of Marlborough. In 1766, her husband the earl was made a duke, reviving the titles that had become extinct as a…