Charlotte Brontë crossword clues are a very specific slice of literary trivia. You get two main categories. One is her novels themselves—'JANEEYRE' is the absolute classic, eight letters, often clued as 'Brontë's Jane'. 'VILLETTE' appears less often but fills a nice seven-letter slot. 'SHIRLEY' is another one, though that clue sometimes trips people up because it's the title but also the heroine's name.
The other big category is characters from 'Jane Eyre'. 'ROCHESTER' is a nine-letter staple for 'Mr. Rochester'. 'HELENBURNS' pops up as a two-word answer for Jane's childhood friend. 'BERTHAMASON', the madwoman in the attic, is a long one they use sometimes. Lesser-used ones might be 'STJOHN' for St. John Rivers, often run together without the apostrophe. I've seen 'THORNFIELD' for Rochester's estate, too. It's a whole little Brontë universe in the puzzle section.
My own weird tip: if a clue mentions 'governess' or 'Lowood', you're almost certainly looking at 'JANEEYRE'. That connection seems to be a favorite shortcut for constructors.