A good person, just a boy (6)

I believe the answer is:

steven

'a boy' is the definition.

'a good person just' is the wordplay.
'a good person' becomes 'st' (saint).
'just' becomes 'even'.
'st'+'even'='STEVEN'

(Other definitions for steven that I've seen before include "- Spielberg, US director" , "voice" , "Man" .)

I've seen this clue in The Guardian.

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