A problem, Diana, is that we cannot verify the claims stated in that typed page from our kinswoman, Frances Jones Kimayer, detailing the results of her search among the Public Records Office of the British Government over 50 years ago. She was not a genealogist, but only an interested party like so many of us, and apparently untrained in all the necessary procedures. She failed in the one critical area that would have provided proof positive that what she claimed was, in fact, "the truth, the whole truth and nothing but the truth": she did not provide exact cites so that we, today, could obtain images of the records she implied she had examined and thus verify for ourselves the sources and veracity of those records. Without such cites, her claims become little better than someone weaving a fairy tale to entertain others.
Several of us pooled our funds and we hired an English Researcher who had the necessary access to the Public Records Office and he was provided with a copy of Frances Jones Kimayer report and tasked with verifying it against the records of the PRO. He failed miserably: I do not know if it was because he failed to understand what we required of him or if it was because the information simply is not in the Government's records. Perhaps if we had been able to spend several thousand times as much money as we did, and hire the absolute best certified genealogist in the British Isles, that individual might have done better.
At all events, Frances Jones Kimayer's document should be examined so that each individual portion of it is individually verified or the whole of it remains forever delegated to the "unproven" category.
We had already verified that Robert was an agricultural bond-servant serving 5 years before being freed. We have since verified his age upon arrival as 19 from the then existing laws of the colony at the time. We had already verified the involvement of Robert West from his 1952 Headright grant of land (image, Library of Virginia website). I, personally, have verified the existence of aGeorge Abernethy of the estate of Barrie but cannot demonstrate that our Robert was related to him. I have produced cogent arguments refuting any possibility of Robert being a son of George Abernethy of the ancient lands of Barrie, based on court documents of the late 1600's in the Virginia Colony, British and Scottish laws then in existence, and the highest possible authoritative genealogical evidence from Britain.
And that is where the issue rests at present.
My present focus is on finding male Abernethys from anywhere in the world (especially the British Isles) and persuading them to provide Y-DNA samples to compare against the now known signature of our Robert Abernathy. It will be a slow and expensive process, fraught with difficulties, but maybe in another 100 years or so a dedicated researcher coming along after us will know if there are any of his kin still existing in the British Isles.