JH,

Welcome to the forum. If you have traced your McLloyd ancestors back to Ulster, Ireland, you are probably Scots-Irish and your ancestors were most likely Irish of Scots descent. Many of the Scots who emigrated to the US during the early to mid 1700's were from the Ulster region of Ireland.

If you are interested in this story, get a copy of James Leyburn's great book "The Scotch Irish". It should be on the shelf at Barnes & Noble.