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Sylvia Sackville, Countess De La Warr DBE (16 July 1903 – 10 June 1992) was a distinguished public servant and a former Vice Chairman of the Conservative Party (1951–54).
She was born as Sylvia Mary Harrison in 1904, the second daughter of William Reginald Harrison of Liverpool. Her brother was actor Sir Rex Harrison.
- David Maxwell Fyfe, 1st Earl of Kilmuir (1925–1967; his death), by whom she had two daughters
- Herbrand Sackville, 9th Earl De La Warr (1 March 1968 – 28 January 1976; his death)
She died in East Hampshire on 10 June 1992, aged 88.
- ^ a b Profile, npg.org.uk; accessed 8 April 2016.