Surname in a Brontë book (4)
I believe the answer is:
eyre
'surname in a bronte book' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eyre that I've seen before include "heroine, so-called" , "SECOND PART OF 20" , "Jane --, 1874 novel" , "See 17 Across" , "An historic journey" .)