Some names have lived on through the ages, in a way ensuring that person is not forgotten. We have early English Kings like William, we have Roman Emperor​s before that, and Greek writers before them. I'm sure there are Persian or Mesopotamian figures whose names are mentioned and recorded even before that. So who is the oldest known person that we know the name of? And how sure are we that they were really a person, not a god or a legend or figurative reference or something along those lines?