Greek biographer who wrote Parallel Lives (8)
I believe the answer is:
plutarch
'greek biographer who wrote parallel lives' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for plutarch that I've seen before include "Ralph cut (anag) - Greek biographer" , "ancient historian" , "old biographer" , "Greek writer" , "Classical Greek essayist (Parallel Lives)" .)