Mary Stewart-Wilson was born and brought up in Somerset, grand-daughter of the talented animal artist Francis Mabel Hollams. She married Blair Stewart-Wilson, Scots Guards, who from 1976 to 1994 was Deputy Master of The Queen's Household and Equerry to Her Majesty. Her interests are in the theatre and arts, and she is the mother of three daughters. She is the author of The Royal Mews (1991). She lectures widely on both the Mews and the Dolls' House.