Actor Novello (4)
I believe the answer is:
ivor
'actor novello' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ivor that I've seen before include "- Novello, actor/composer (We'll gather lilacs)" , "__ Novello, Welsh composer and songwriter, d. 1951" , "- Novello, writer of Keep the Home Fires Burning" , "Fellow" , "Literary engine's name" .)