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George John Frederick Sackville, 4th Duke of Dorset (15 November 1793 – 14 February 1815), styled Earl of Middlesex until 1799, was a British nobleman.
George John Frederick Sackville, 4th Duke of Dorset (15 November 1793 – 14 February 1815), styled Earl of Middlesex until 1799, was a British nobleman.