I believe I have developed a rough outline of how Beulah is related to some of the other Ivey/Ivys in Campbell County, TN. It's now presented in my "Campbell County TN Family Tree" at Ancestry.Com.
It's my belief that the Campbell County Ivey/Ivys are descendants of some of the Ivey/Ivys in the areas of Anson/Bladen/Robeson Co, NC, and Marlboro/Marion Co, SC. We have some Y-DNA results which show a very close connection in the paternal line.