I found this song on Sir Shambling's, and I understand 100% why he "could listen to the guitarist behind Lee all day long..." In my opinion, A Good Woman is another of these songs whose guitarist almost steals the show from the singer. That doesn't mean, however, that Lee Martell is doing a poor job. On the contrary, he does some great singing -- but what makes the song truly brilliant is the instrumentation.
Since Sir Shambling mentions Martell's heavy slant towards Country & Western in his other material, I think this article in the March 1970 Ebony Magazine is about his sister. (He is mentioned in the caption under Linda Martell's pic.)
A Good Woman, Lee Martell (Renegade 197?)