Celebrated personage showing negative potential! (10)

I believe the answer is:

notability

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'celebrated personage' is the definition.
'notability' can be an answer for 'personage' (notability is a kind of personage). I am not certain of the 'celebrated' bit.

'negative potential' is the wordplay.
'negative' becomes 'not' (I've seen this in another clue).
'potential' becomes 'ability' (both can mean talent).
'not'+'ability'='NOTABILITY'

'showing' acts as a link.

Can you help me to learn more?

(Other definitions for notability that I've seen before include "top person" , "VIP" , "fame" .)

I've seen this clue in The Irish Independent.

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