James Barnes was an ancestor of mine, and I have been doing a lot of research on the various branches of my family in Onlsow County. This includes Barnes, Coston, Smith, Kellum, Winberry, and many others, along with the Owens. They all lived beside one another throughout the 1800's, and in some cacses back into the 1700's.
Would love to share info with you. I don't think that I have anything useful though on these two Owens you mentioned who were living with James Barnes.