Shackle Cinders? Novel Twist! (that was one of his) (7,7)
I believe the answer is:
charles dickens
'twist that was one of his' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'shackle cinders? novel' is the wordplay.
'novel' indicates an anagram.
'shackle'+'cinders'='shacklecinders'
'shacklecinders' is an anagram of 'CHARLES DICKENS'.
(Other definitions for charles dickens that I've seen before include "Author" , "English novelist" , "Writer" , "Novelist, 1812-70" .)