I don't know if this helps at all, but recently, in tracking my own Taylors of Tennessee, I've come to realize that my ancestor James B. Taylor 1771 (NC) - 1820 (Wilson/TN) is very likely named James Britton Taylor, as a number of his grandsons, great-grandsons and great-great-grandsons bear the same name. James Britton Taylor's daughter Martha Taylor c.1803-1845 (Wilson/TN) married a William Reese, another of the names you mention; but I don't see how your James Paul would fit anywhere into his descnedants. (My GEDCOM is on Rootsweb "WorldConnect", database name rmbtoronto, if you want to check it out.)
Now, I have encountered the same combination of names elsewhere -- Virginia, for example -- and it is possible that the Wilson Co. TN. pioneer bore it from one of his forebears. His father was Colonel Thomas Taylor ca.1748 (NC) - 1815 (Davidson/TN), and no one has yet made a verifiable connection to any Taylors before that -- except to say that there is a close relationship to President Zachary Taylor's ancestors. And I believe that he is mentioned in "General James Taylor recounts his family history" towards the end, as "Major Thomas Taylor of the late war" -- this is located at http://www.jenforum.com/taylor/messages/26048.htmlhttp://www.jenforum.com/taylor/messages/26048.html.
As well, it seems to me that in Ethel Taylor Ford, Thomas Taylor and Benjamin Branch and related familes of Nashville, Tennessee (1972) that the Reese family married elsewhere into this line. Memory fails, here.
All the best with your brick wall! Hope this might help in some small way.