When I started researching Thomas Crawford more than twenty years ago, I too ran into a Brick wall. I found in the library where a Thomas 1806 was listed as being the first born of the Nacogdoches Crawford. Since Thomas settled on Crawford Creek which is near 2121 leading to Nacog, this seemed even more of a possibility. However, I was shot down. The person who listed this in the article was in Nacog but never contacted me. My old aunt said that her grandmother was a Runnels (and she had an Aunt Reynolds) and that there was a sister left in Tennessee. Would love to get together and work out this puzzle. In all these years, I have gotten no further. Though I do think that the Crawfords in Nacog are related in some way.