I think it is entirely possible that some folk song collector travelled to Grenada and recorded it in an obscure hard-to-find field recording. The liner notes of the Joseph Spence album- thanks, Joe! - suggest that it is a folk song, but the Bahamas? why would a folk song from Grenada get labelled Bahamian? Maybe the theme is common? Does anyone have any folk song collections they could give me references to that contain songs similar to this, or even this song? I've done my own research- The Traditional Ballad Index apparently includes "Sloop John B", but not this, and I believe there should be references to "Brown Skin Girl" if it was collected.