Possibly unseat a famous novelist (6)

I believe the answer is:

austen

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'a famous novelist' is the definition.
'Austen' can be an answer for 'novelist' (Jane Austen). I'm not certain of the 'a famous' bit.

'possibly unseat' is the wordplay.
'possibly' indicates an anagram.
'unseat' with letters rearranged gives 'AUSTEN'.

Can you help me to learn more?

(Other definitions for austen that I've seen before include "Jane, English novelist" , "Author of Sense and Sensibility" , "Jane --, English author" , "English novelist, portrayed middle-class families" , "Mansfield Park author" .)

I've seen this clue in The Globe and Mail.

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