The Battle of Culloden happened on 16 Apr 1746. Approximately 90-something years after the arrival on these shores of either Robert Abernathy of Charles City County, VA (1652) or William Abernathy of Wallingford, New Haven Co, CT (about a dozen yrs later). There is no evidence of which I am aware that points to these two individuals as being brothers. Nor as being sons of George Abernethie of Barrie in Strath Ilsa, Morayshire, Scotland. Those who try to claim otherwise all seem to disappear as soon as anyone asks them to cite and/or produce the evidence so other researchers can also examine it. I'll grant you that there was a William Abernethie amongst the descendants of George's younger brother, Alexander, but little indication that he survived to adulthood. According to a previous holder of the official title and duties of a Lord Lyon King of Arms for Scotland, both the Barrie line (from George's son and heir James) and the Mayen line (from Alexander's eldest son and heir, James) went extinct in the male lineage in 1722 and 1785 respectly. The other son of Thomas Abernethie of Auchincloch apparently never married.