Lady Sophia Louise Sydney Topley (née Cavendish; born 18 March 1957) is the third child and second surviving daughter of the 11th Duke of Devonshire and his wife Deborah (née Mitford).
Anthony Morrison (later the 3rd Baron Margadale), on 19 July 1988; they were divorced some time before 1999.
They have two children: She married William Topley on 25 November 1999.
As Lady Sophia Murphy, she is the author of The Duchess of Devonshire's Ball (London: Sedgwick & Jackson, 1984), a photo-album of a costume ball given in 1897 by a previous Duchess of Devonshire.
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