Do you think Isaac and James Adair were brothers? I wonder if John Greer could be Ruth Greer's brother? I have not been able to find anything on my Isaac and Ruth Adair. According to information in the Adair History and Genealogy by James Barnett Adair, Isaac was killed by the Tories. He stated also that Isaac Adair and Ruth Greer were married in the North of Ireland and then came to America. I find no trace of their parents.