Papa Hemingway (6)
I believe the answer is:
ernest
'papa hemingway' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ernest that I've seen before include "The boy sounds serious" , "A new genre is myth (anag) -- author" , "American writer . . . . . . Hemingway" , "Author Hemmingway, and Oscar Wilde's hero" , "Name beloved of Gwen Fairfax (Wilde)" .)