I have information on some of the Bethea's in Alabama but I don't have my information with me today. I will look at it tomorrow and respond again.
Based upon what you have mentioned I believe that your branch Goodman Bethea and Hugh Bethea are from the Betheas in the Brewton AL area. I believe the Goodman Bethea you mention was the son of Jesse Bethea and Celia Harrison Bethea. I will confirm tomorrow.
In the meantime there is a web page www.betheafamily.org
that will contain some information for you. There are many family trees listed there and I truely believeyou will find yours there.