I've just rung Stan Crowther and he tells me that although he used to sing the song - and often wished he'd written it because it was so good - it's not one of his.

Stan believes it was written by a woman from Birmingham (England) very soon after the trial and spread rapidly through Folk Clubs.

It's got a known writer, so the singer-songwriter in Birmingham must be due some royalties from The Liberated Woman's Songbook.