In the novel 'Wuthering Heights' by Emily Bronte, the character called Lockwood to whom the story is narrated by the housekeeper, has to spend the night in the creepy gothic house. Whether it is the ghost of Cathy of just his Gothic surroundings that causes the dream is open to debate. My reading of it interpreted the event as extending the theme of restless unfulfilled immortality - in other words a person who has died but is not 'at rest' or 'in heaven.' The 'ghost' or 'soul' has unresolved issues and therefore cannot rest as it tries over and over to work them out. This echoes Heathcliffe's own restlessness and inability to be at peace with himself ever - either when Cathy is alive or when she is dead - or even when he goes as far as to actually get into her grave.
Lockwood dreams invite the idea of the spirit of Catherine as a child into her chambers. In the story "Wuthering Heights" Catherine has been dead for a while. However, when Lockwood sleeps in her chambers he wakes to a child's spirit. The spirit grabs his arm causing him to pull it forward. He sees the spirit cut her arm on the window glass and the next day there is blood.
The other dream has to do with Lockwood finding Catherine Earnshaw's diary. He is frightened and when he jumps he knocks over the candle. While cleaning it up, he comes across her diary. By finding the diary it seems as if Catherine's spirit is reaching out from the grave.
I do not have my book in front of me, so I am not sure which dream came first, but I believe the second one that I wrote about happened first.