Thankyou for clarifying the "Gilderoy" business, Bruce.  That's a very good point, too, about JFSS numbers; I've been quoting directly from Lloyd's notes, and hadn't thought to cross-reference with Margaret Dean-Smith's index, though I have been using it to find versions of songs under other names.  In future I shall give both volume and issue number where I can; pagination is by volume, so that's still a safe guide.

Malcolm