Sarah Churchill, Duchess of Marlborough
A sister of soldier-statesman James, Earl Stanhope (1673–1721), Mary Fane was also an old friend of the Mistress of the Robes, Sarah Churchill, Duchess of Marlborough, (coincidentally, the Duchess was a fourth cousin of Mary Stanhope's future husband, Charles Fane, the common ancestor being Walter Mildmay), having been one of the six original Maids of Honour to Queen Anne, appointed 4 June 1702, an office she had vacated by November 1707.