Thank you so much for replying. You won't believe this but a few months back someone sent to me a copy of the book "The Alexander Letters, 1787-1900" which is all about the Alexander/Hillhouse families of GA. But I can't find any connection to my Orr family. I have found proof that my William Gillespie Orr was born 1797 in Mecklenburg co. NC to Sample Orr. And William did name his oldest son James Hillhouse Orr and a younger son William Alexander Orr.
Again, thanks for taking the time to reply to my query.