Johnny Bragg was part of vocal group The Prisonaires (who were all inmates at Tennessee State Penitentiary) in the early '50s. Bragg had been in prison since 1943, serving concurrent life sentences for six counts of rape.
The Prisonaires cut a few 45s / 78s for Sun around 1952 - 54 and, as the sleeve above states, Johnny Bragg wrote "Just Walkin' In The Rain", recorded by The Prisonaires in 1953, and became a UK / US No. 1 for Johnnie Ray three years later.