Mary Shelley, the daughter of the writer Mary Wollstonecraft, was born in 1797. At the age of 16 she ran away to the Continent with the poet Percy Bysshe Shelley, marrying him in 1816 on the death of his wife. She started to write Frankenstein as her contribution to a ghost story competition while staying near Lake Geneva with Shelley and Lord Byron. After her husband's death in 1822, she returned to England with her son to continue her career as a writer and died in 1851.