"The Prince and the Pauper" star, 1937 (5)
I believe the answer is:
flynn
'the prince and the pauper star 1937' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for flynn that I've seen before include "Errol -, US film actor" , "Errol - - , film star" , "FILMSTAR" , "Errol -, swashbuckling film actor" , "Hollywood actor, Errol, d. 1959" .)