Archibald Joseph, whose novels were expertly doctored (6)
I believe the answer is:
cronin
'archibald' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see an association between them that I can't see?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for cronin that I've seen before include "A. J. -, Scottish novelist" , "author" , "writer" .)