Carmilla by Joseph Sheridan Le Fanu (1814 - 1873)

Carmilla is a Gothic novella by Joseph Sheridan le Fanu. First published in 1872, it tells the story of a young woman's susceptibility to the attentions of a female vampire named Carmilla. Carmilla predates Bram Stoker's Dracula by over twenty years, had a strong influence on Stoker's famous novel. (Summary from Wikipedia)