Buskerjoe, If you live in Canada and intend to produce your CD there copyright law is much different than in the USA. I do not know if Blind Jack Copeland Mathis wrote the song or not. He was an old time country singer and many of them did traditional songs verbally passed down from oral tradition. If any copyright claim exists I expect that his daughter may hold it or know who does. Much of this "old time" materiel may have copyright claims filed by recording companies that are not of authourship but of arrangement. (Not worth a plugged nickle)
If you are recording in Canada you do not have to show copyright holder's consent. However if a valid copyright exists you may owe the holder a royalty fee based on the number of recordings that you made. This should only be due to the authour and not the arranger unless you duplicate that arrangement.