FYI, pertaining to this thread.
Witches and War-Whoops
Folkways album with preview audio of Susanna Martin as sung by John Allison. The melody is different from that on the Touchstone record, which apparently was written by Claudine Langille.

Album liner notes
I can't find any reference to the authorship of the lyrics of this song in the liner notes. The implication is that John Allison collected it from some unspecified source. That said, John Allison does claim copyright for "All ballad items" in his liner notes.

Tom Smith