historical

of or relating to the study of history; "historical scholars"; "a historical perspective"

having once lived or existed or taken place in the real world as distinct from being legendary; "the historical Jesus"; "doubt that a historical Camelot every existed"; "actual historical events"

belonging to the past; of what is important or famous in the past; "historic victories"; "historical (or historic) times"; "a historical character"

used of the study of a phenomenon (especially language) as it changes through time; "diachronic linguistics"