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Mary Boykin Chesnut (née Miller) (March 31, 1823 – November 22, 1886) was an American author noted for a book published as her Civil War diary, a "vivid picture of a society in the throes of its life-and-death struggle." She described the war from within her upper-class circles of Southern slaveowner society and one way it was not helpful was because it was written in her own opinion