Mary Shelley (1797 – 1851) was a British novelist, short story writer, dramatist, essayist, biographer, and travel writer, best known for her Gothic novel Frankenstein: or, The Modern Prometheus (1818). Her husband was the Romantic poet and philosopher Percy Bysshe Shelley. Read more http://en.wikipedia.org/wiki/Mary_Shelley.
In 1816, the couple spent a summer with Lord Byron, John William Polidori, and Claire Clairmont near Geneva, Switzerland, where Mary conceived the idea for her novel Frankenstein.