Shelley's Cottage is a Grade II listed house on Wick Lane in Runnymede, Surrey. The two-storey cottage dates from c. 1800 and is built from red brick with a low-pitched slate roof. It has been extended several times with matching materials in a sympathetic style. The area was known as Bishopsgate in Shelley's time.
It is named for the Romantic poet Percy Bysshe Shelley, who lived at the cottage with his wife Mary Shelley (née Godwin) from August 1815 to May 1816. The Shelleys' son, William, was born at the cottage in 1816.
The Shelleys were able to rent Bishopsgate after a revival in Percy's finances due to the death of his grandfather, Sir Bysshe Shelley. After a holiday in Torquay, they came to live at the cottage, on the eastern edge of Windsor Great Park. Little is known about this period in Mary Godwin's life, since her journal from May 1815 to July 1816 is lost. At Bishopsgate, Percy wrote his poem Alastor; and on 24 January 1816, Mary gave birth to a second child, William, named after her father and soon nicknamed "Willmouse". In her novel The Last Man, she later imagined Windsor as a Garden of Eden.
- Seymour, Miranda. Mary Shelley. London: John Murray, 2000. ISBN 0-7195-5711-9.
- Sunstein, Emily W. Mary Shelley: Romance and Reality. 1989. Baltimore: Johns Hopkins University Press, 1991. ISBN 0-8018-4218-2.