Augusta Mary Monica Crichton-Stuart, Marchioness of Bute, DBE, GCStJ (19 August 1880 โ 16 May 1947), was an Anglo-Irish aristocrat who was a daughter of Sir Henry Bellingham, 4th Baronet, and Lady Constance Julia Eleanor Georgiana Noel, daughter of Charles Noel, 2nd Earl of Gainsborough.