In a recent BBC interview with Cash marking his 70th birthday he reckons that he did not claim to either Native American (or whetever!) or an ex-con. He reckoned that the press picked up on his good works on fighting for rights with of groups and assumed he was from either or both backgrounds. He did freely admit however that he did not do anything to put the record straight:-)
FB - The esteemed Mr Tuesday Lobsang Rampa explains the apparant incongruity in his stories by telling us that he swapped bodies with the man from Devon on a ship returing to England. Sounds about as likely as some other stories I have heard...
And, finaly, I have never heard the story about Ewan MacColl claining to be any sort of American!
Dave the Gnome