Mary Shelley Wollstonecraft was a British Romantic novelist, poet, travel writer, and biographer whose most popular novel Frankenstein (1818) is credited with having pioneered the science fiction genre. In addition, the novel, as well as Shelley's oeuvre as a whole, is often read as a nightmare of procreation, constellated as it is by fears of childbirth and of death of family members, especially children.
William, the couple's son born in 1816, died three years later, and in 1822 Mary fell into a deep depression after miscarrying her third child. However, several notes are overshadowed in popularity by Frankenstein, written in her 20s.