One more thought - I have always had a hard time believing that William Bean sneaked into upper East Tennessee and squatted on Cherokee land in the late 1760s within a stone's throw of the Warrior's Path, without them being aware. This is just pure speculation on my part, but I suspect he was there by permission of at least some of the Cherokee, perhaps involved in the hide trade or providing beneficial services to them - blacksmithing, gunsmithing, etc. like the Carters and Jacob Brown nearby.
Many young Scots worked the back-country native trade in the Southeast out of Virginia, the Carolinas and Georgia - particularly among the Cherokees and Creeks - and become very comfortable living among, and were accepted by, the local tribes - to the point that by the time of the Revolution there was a sizable population with mixed Native American/Scot heritage. Robert Benge, James Vann, John Watts, Alexander McGillivary, MacIntosh, Mennawa - just to name a few. Throw into this mix longhunters, land speculators, and lots of former Regulators seeking refuge in the back country after Tryon cracked down on them in 1771, and upper East Tennessee presents a really interesting picture on the eve of the Revolution.
Guy