I would go back to 1850 and find out if my grt grt grandparents left Tiree by choice or by force,,,The highland clearence was around that time and some where forced,,,almost driven out,,and others left at a chance of a new life,,,better life,,,and since this subject is touchy.. depending on whom you talk with or research,,,I could find a lot of info out as to why some where left behind,,,and what if anything they brought with them