"Some are born Great, some achieve Greatness and some have Greatness thrust upon them."

Not many people in history have had the title "the Great" conferred upon them and these have been Monarchs or Popes.

But none of them have, to my knowledge, been Scots.

Despite that, there are many Scots who are seen to have an element of greatness in the minds of folk. Depends upon one's interest or knowledge as to how that criteria is applied. For some it's patriotic military leadership and for others it's how they have inspired and influenced the lives of others and for some others it's because they have actually heard of them or seen a movie based (however inaccurately) on their lives.

It would be interesting to get official X Marks nominations and then have a vote on the 10 most nominated with someone acting as advocate for each candidate. At least that way we would know who the X Marks Greatest Scot is!