Where did the sur name of jackson come from? more inside.?

Question:

Where did the sur name of jackson come from? more inside.?

exsample: jackson's in south east kentucky.

Best Answer - Chosen by Asker: Jack's son or son of Jack
Seriously when you see the last name end in Son, it at one time meant "son of"
In Ireland and Scotland the use the Mc or Mac

I really don't know, I'm just thinking out loud here, so to speak.