Mary Wollstonecraft Shelley (1797-1851) was an English writer, best known for her Gothic novel 'Frankenstein; or, The Modern Prometheus' (1818). The book is considered her masterpiece and an early example of science fiction. She also edited the work of her husband, the poet and philosopher Percy Bysshe Shelley. A significant figure in the Romantic movement in her own right, her work is often praised for its political and feminist themes.