This thread was just recently brought to my attention --
I am the co-administrator of the Morrow DNA Project.We have over 60 Morrow males who have joined, and a number of them are from lines originally from the South, particularly North Carolina.The William Morgan Morrow line would therefore be an excellent one to test, as it is very likely there would be a match telling you what other Morrows in the area were descended from a common male ancestor.
The person who sends in a swab from his cheek must be a male-born Morrow, but anyone can be the sponsor and get the results. If you're interested, email me or check out the link below.
(This is not a sales pitch, I promise -- I volunteer to do this because I'm just interested in where my North Carolina Morrows came from!)