Lady Mary Faith Culme-Seymour (née Montagu, previously Nesbitt; 1 November 1911 – 16 February 1983) was a British aristocrat and letter writer.
The daughter of the 9th Earl of Sandwich and American heiress Alberta Sturges, she grew up at the family's ancestral seat, Hinchingbrooke House in Huntingdon.
When her brother, Victor Montagu, 10th Earl of Sandwich, sold the family home in 1955, Lady Faith took her close friend, the novelist E. M. Forster, to see it one last time.
Through her second marriage, to Sir Michael Culme-Seymour, 5th Baronet, Lady Faith was the châtelaine of Rockingham Castle in Northamptonshire, where she oversaw the renovation and redecoration of the house.
At the time of her father's elevation to the peerage, she became entitled to the courtesy title The Lady Mary Faith Montagu as the daughter of an earl.
[5] She returned to England and married, a second time, to Sir Michael Culme-Seymour, 5th Baronet of High Mount and Friery Park, on 18 March 1948.
[6][1] Like her mother and grandmother, Betty Leggett, Lady Faith and her second husband were attracted to the religious traditions and philosophies of India.