Shelley's middle name (6)
I believe the answer is:
bysshe
'shelley's middle name' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for bysshe that I've seen before include "Percy ...... Shelley, great Engligh poet" , "Percy . . . . . . Shelley, great English poet" , "See 20" , "name used by poet" , "Shelley's middle name" .)