A gentleman by the name of Roger Davis told me they were Protestants (Calvinists in this case) and pointed me at Wikipedia which states,
"Scotch-Irish (the historically common term in North America) or Scots-Irish refers to inhabitants of the United States and, by some, of Canada who are of Ulster Scottish descent, immigrating from the province of Ulster in Ireland. The term may be qualified with American (or Canadian) as in "Scotch-Irish American" or "American of Scots-Irish ancestry".
In the United States in 2000, 3.5 million people claim "Scotch Irish" ancestry,[1] and are spread widely across the U.S., especially in the South, in Appalachia, and from Western Pennsylvania through Ohio. After 1945 many relocated to California and Florida."
Mike