Caesar and Cleopatra playwright (4)
I believe the answer is:
shaw
'caesar and cleopatra playwright' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for shaw that I've seen before include "Major Barbara playwright" , "G. B. ---; T. E. ---" , "Thicket; playwright" , "writer of plays and critical commentaries" , "Irish playwright, d. 1950" .)