To my mind John Hartford (1937 -2001) was a modern incarnation of Samuel Clemens, except that Mr. Hartford wrote songs (e.g., "Gentle on My Mind") whereas Mr. Clemens wrote stories. Still, they both told tales, were steam-boat pilots, and had more than a bit of the Mississippi River thoroughly mixed into their blood.
Here's Sam Bush's live tribute to Mr. Hartford. I hope that you enjoy it: