There are very few historical figures of that period (especially ones of such little contemporary importance) that we have a lot of really-contemporary written

There are very few historical figures of that period (especially ones of such little contemporary importance) that we have a lot of really-contemporary written accounts of. By comparison, we have no contemporary accounts of Socrates, a much more prominent figure, in a much more literate subculture. But yes, agreeing with you again (hello from the other thread!) from the other end - the authentic bits tell us next to nothing about this character.