I've a dim memory of Martin Carthy covering a Gilbert O'Sullivan song at some point - can't remember which one - Ooh-Wakka-Doo-Wakka-Day maybe?

As for Bert Lloyd, surely he's one of those aforementioned academics whose imaginations folk songs are the figment of - hence Jack Orion presumably. Hitherto I've loathed this particularly pretentious conceit, if only because of the innumerable hours of my life I've lost enduring the bloody thing in singarounds, but now that I know the melody is based on Donald Where's Yer Troosers? it is, to a certain extent, redeemed. As ever, Malcolm, I doff my proverbial cap to ye!