Oh, this is all new to me, about anyone knowing anything beyond Arthur! I would be fascinated to learn of anything else you have on these folks.
I descend from Arthur 3 ways I know of. I only discovered my Ownbey connection about 2 years ago. My aunt married an Ownbey 40 years ago, and I didn't know until last year that he is my 5th cousin!
One line came from Rutherford Co., NC, to northeastern GA (Union Co.) in the early 1830's. Another line found their way eventually to Clay Co., NC, just over the state line from Union Co., GA. And would you believe it, they found each other a couple of generations later, and some have even married distant cousins.
That part is not so unusual. What is unusual is that I have found a number of Ownbeys marrying cousins of various distances in several generations, in many parts of the country, sometimes Ownbeys who didn't even know of the other Ownbeys.