"She was an animal given to Colonel Morgan by some admirer from his native Kentucky, and they called her "Black Bess."
Battles and Sketches of the Army of Tennessee, Lewis Ridley Bromfield, 1906, pp. 98/9

A gift from Warren Viley of Stonewall, Woodford County, Kentucky, and sired by Drennan from a famous line of Bluegrass saddle stock. . . "
John Hunt Morgan and his Raiders, Edison H. Thomas, p. 35
http://books.google.com/books?id=E85Z1PuDSuQC&pg=PA35&lpg=PA35&dq=Morgan's+%22Black+Bess
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