Confine good route for author (9)
I believe the answer is:
hemingway
'for author' is the definition.
(Hemingway is an example)
'confine good route' is the wordplay.
'confine' becomes 'hemin' (to hem someone in is to confine them).
'good' becomes 'g' (abbreviation).
'route' becomes 'way' (way is a kind of route).
'hemin'+'g'+'way'='HEMINGWAY'
(Other definitions for hemingway that I've seen before include "See 5" , "Author of The Old Man and the Sea" , "He wrote Farewell to Arms" , "Author of "For Whom the Bell Tolls"" , "best-seller" .)