Although I have to point out that there was a piece of speculative science fiction called The Blazing World published by one Margaret Cavendish, Duchess of Newcastle-upon-Tyne in 1666, slightly predating Mary Shelley.
Hell, the first named author in history? Enheduanna, a Sumerian high priestess, poet and lyricist. She’s known as the Shakespeare of Sumerian literature.
The first American mystery novel was written by Metta Victoria Fuller Victor, as well as the first dime novel, and the first crime novel..
The definition of fun. The jump at the end though 😄