Before there was no household registration system, unknown people would not record it, and even if it was spread orally, it would probably not spread widely.

Famous people like Qin Shihuang or Confucius can be recorded in history books. The characters in question are not recorded in various official chronicles or biographies.

I hope it helps you!

Don't spray if you don't like it! For reference only, your adoption has helped me a lot! thank you