Like everyone else here, I have taken up the search for our lineage. True, there are several branches. For example, my branch is not the South African line. Unfortunately, I am unable to get past the old traceable ancestor Basil Human born about 1734 in Maryland (near as we can tell).
However, my father has taken part in a DNA test that I believe will help the more of us that participate. The site can be found at https://www.familytreedna.com/
It is NOT free, I do NOT work for these people, I have NO ties to them other than a common search for our family heritage in all its myriad of arms.
Look at the site, if you are interested please select the 67 marker (the 12 and 25 are near worthless in establishing relatives as there just aren't enough genetic markers to be accurate).
P.S. Hi aunt Peggy- saw your post, maybe I'll get a chance to see you next year in TN!