Your question seems really unclear. Do you need a specific actor? Or do you want to know the etymology of the word actor, and where that particular word comes from?
If the latter is the case, here is the origin of the word actor:
It comes from the Latin verb agere, which meas to do, to act. The Latin noun actor was derived from the verb agere, and it means doer, actor, a person who does something, or acts. So, the English word actor was directly taken from the Latin one.