Protagonist in Roxburghe romance (4)
I believe the answer is:
hero
'protagonist' is the definition.
(I've seen this before)
'in roxburghe romance' is the wordplay.
'in' indicates a hidden word.
'HERO' can be found hidden inside 'roxburghe romance'.
(Other definitions for hero that I've seen before include "Man admired for courage and nobility" , "Person distinguished by exceptional courage" , "Star" , "Man admired for courage and achievement" , "Revered figure" .)