The Brontë sisters wrote smutty RPF
If the Bronte sisters were alive today, would they be writing fanfic? (Answer: Definitely yes.) – @fangirlamanda (x)
Let me expand on that answer with this excerpt from the Brontë page on @otw-fanlore wiki (x):
They were huge fans of Arthur Wellesley, First Duke of Wellington, who had defeated Napoleon at Waterloo, and invented long, elaborate sagas of his further adventures along with his two sons, Arthur and Charles. There were action-adventure, supernatural fantasy, mystery and comedic stories, with an increasing focus on romance and erotic melodrama over the years.
So there you have it. The Bronte sisters totally wrote smutty RPF.