Play duke wrong wearing gold ring (6)
I believe the answer is:
orsino
'play duke' is the definition.
'orsino' can be an answer for 'duke' (I've seen this before). I'm unsure of the 'play' bit.
'wrong wearing gold ring' is the wordplay.
'wrong' becomes 'sin' (wrong can mean a sin or crime).
'wearing' means one lot of letters goes inside another.
'gold' becomes 'or' ('or' is the heraldic name for gold).
'ring' becomes 'O' (O is the shape of a ring).
'or'+'o'='oro'
'sin' put inside 'oro' is 'ORSINO'.
Can you help me to learn more?
(Other definitions for orsino that I've seen before include "Duke of Illyria" , "Twelfth Night duke" , "A duke, European" , "one in Twelfth Night" , "A Shakespearean role" .)