Was he prone to excite Evita? (5)

I believe the answer is:

peron

I'm a little stuck... Click here to teach me more about this clue!

'evita?' is the definition.
(nickname of Eva Peron)

'was he prone to excite' is the wordplay.
'prone' anagrams to 'PERON'.
Though, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for peron that I've seen before include "Former Argentinian leader" , "Juan ---, Argentine dictator" , "Former Argentine leader" , "Surname of Evita of the musical" , "Argentinian dictator, 1946-55" .)

I've seen this clue in the Evening Standard.

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