Awfully mad crony, one managing author (7,8)

I believe the answer is:

raymond chandler

'author' is the definition.
(US author)

'awfully mad crony one managing' is the wordplay.
'awfully' indicates anagramming the letters.
'one managing' becomes 'handler' (someone who handles or manages someone else).
'mad'+'crony'='madcrony'
'madcrony' with letters rearranged gives 'raymondc'.
'raymondc'+'handler'='RAYMOND CHANDLER'

(Another definition for raymond chandler that I've seen is " writer".)

I've seen this clue in The Times.

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