I am descended from a Loftis line that is based around Athens, Texas (East Texas). I am currently awaiting receipt of a book titled Loftis: Descendants of Laban Loftis (Library of Congress: 93-72141), which should fill me in on my family all the way back to Ireland. Perhaps the people you are looking for are in this book?
(If you want to get a copy, contact William Bryant, 4501 Idaho Ave., Nashville, TN 37209.)
If I remember, I'll look in the book when I get it and see if they are in there.