Plenty folky lawyers. Me to start with. Some would say that was plenty anyway.

Robin Bynoe, at Charles Russell, London (flute, whistle).
A morris woman at Maidstone Borough Council
A couple of other members of the Performer Lawyer Group (do a google)

And I know a VP of legal affairs at Paramount who is a flatpicker.

But does anyone know a folksong in which a lawyer is a hero?

Or is a lawyer never a hero until you need one?