Prize presented to aforementioned boy with a bow (5)
I believe the answer is:
cupid
'boy with a bow' is the definition.
(in mythology Cupid fires arrows with a bow)
'prize presented to aforementioned' is the wordplay.
'prize' becomes 'cup' (cup is a kind of prize).
'presented to' is a charade indicator (letters next to each other).
'aforementioned' becomes 'id' (short for idem, Latin term for just mentioned).
'cup'+'id'='CUPID'
(Other definitions for cupid that I've seen before include "Love-god" , "godlike figure" , "One killed for religion" , "Boy symbol of love" , "boy with little bow" .)