Robert Johnson.
Now there is an R rated movie just waiting to be made. Comedy, Pathos, American History and American music all rolled into one. Plus being buried in three different graves in three different cemeteries, maybe a little Zombie & Voodoo for added interest.
He was known to sleep with ugly women, and did so one time too many as he was poisoned with strychnine and died a horrible death over a period of many hours.