DaveO, I distracted myself, not misread his post. I was focusing on the songs that might have had a life in both places, transplanted, translated, immigrated. So my response to the Yellow Rose remark had to do with the clear Texas origins based on my looking for transplants. But since the tune could have come from elsewhere, I had to stop to consider the baggage that comes with a melody. (i.e., lots of words have been put to the tune of Danny Boy or Londonderry Air, but didn't the tune itself dictate the nature of the words that were sung to it.)

Perhaps best to consider this a sidebar to the main question.

SRS