Informative:

https://www.southerncultures.org/article/the-good-old-rebel-at-the-heart-of-the-radical-right/


Vance Randolph recorded 70-year-old Booth Campbell's somewhat unusual version at Cane Hill, Ark., in Feb., 1942. This is it, but it was Campbell's father who was a "Confederate veteran":


https://www.youtube.com/watch?v=nixg7wwuG2Y

Campbell's tune reminds me of another that I can't quite place.

In 1901 a Union veteran from Kentucky had written to the National Tribune (Washington, D.C.) for the words to a Southern song that began, "I'm glad I'm a good old rebel, hat, coat, boots, and all" - just like Campbell's.