Who invented surnames or family names? Name some of the world's oldest surnames

Question:

Who invented surnames or family names? Name some of the world's oldest surnames that are still in use.?

Best Answer - Chosen by Asker: A long long long time ago people's last names came from their profession. My last name is Gaither and someone told me that the name is English and it was for Gate Keeper back in the day. Probably something like Smith came from a Black Smith profession.