Quote Originally Posted by davidlpope View Post
No. Scots-Irish refers to a people group who are genetically "Scots", but who lived in Ireland for a period before emigrating to America. There is very little, if any, intermarriage with the native Irish among this group. They are the exact same group that you are referring to as "Ulster Scots", except they emigrated an additional time to the United States where they acquired the name "Scotch-Irish".
Although this is the proper historical definition of the term 'Scots-Irish', it seems that a few American members use to to refer to their heritage if they have both Irish and Scottish ancestors, even if from different sides of the family.