"The Haunted Baronet" is not a known work by Sheridan Le Fanu. However, Joseph Sheridan Le Fanu was a renowned Irish writer known for his contributions to the genre of gothic and supernatural fiction during the 19th century. Some of his notable works include "Carmilla" and "Uncle Silas." If you have any questions about his known works or would like information on a different book or topic, please feel free to ask.