I ordered the "Anthologie de la chanson francaise" from Amazon.fr and it was worth every penny. My favourite song - "Les enfants de Pontoise", not exactly an outlaw song, but one about an execution. The lyrics are deceptively simple, and very grim and chilling, particularly as sung by Marc Robine, one of the best trad singers I have ever heard.

Thanks for pointing me in this direction.

Edmund