Jubal Early was a CSA General in the US Civil War, he also served as a bureaucrat and historian after the war. Prior to the war he was a lawyer, politician, and officer in the United States Army.
Jubal Harshaw was a strong supporting character in Robert Heinlein's science-fiction novel, "Stranger in a Strange Land." His character portrays many of the philosophical arguments being put forth in the work. He is a man of wisdom, wealth, and wit.