Eva portrayed by Madonna (5)
I believe the answer is:
peron
'eva portrayed by madonna' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for peron that I've seen before include "Argentinian president, Evita his wife" , "Argentinian dictator, 1946-55" , "Surname of Evita of the musical" , "Prone to being an Argentine president" , "Former Argentinian leader" .)