The Scots Who Left

[kilted hillbilly]

The key phrase seems to be "direct" migrants. For as most of us know, the Uslter-Scots or Scots-Irish came and settled in the south in large numbers. But many came before the 19th and 20th centuries.

And many of these Scots-Irish came down out of the hills and were responsible for important victories against the English during the rebellion.

Me thinks you have hit the nail squarely on the head.