Brother of Ophelia (7)
I believe the answer is:
laertes
'brother of ophelia' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for laertes that I've seen before include "Son of Polonius (Hamlet)" , "Hamlet's killer" , "Greek king" , "Man advised not to borrow" , "... killer of prince" .)