Peter Pan; or, the Boy Who Wouldn't Grow Up or Peter and Wendy, often known simply as Peter Pan, is a work by J. M. Barrie, in the form of a 1904 play and a 1911 novel. . Both versions tell the story of Peter Pan, a mischievous yet innocent little boy who can fly, and has many adventures on the island of Neverland that is inhabited by mermaids, fairies, Native Americans, and pirates. The Peter Pan stories also involve the characters Wendy Darling and her two brothers, Peter's fairy Tinker Bell, the Lost Boys, and the pirate Captain Hook. The play and novel were inspired by Barrie's friendship with the Llewelyn Davies family. Barrie continued to revise the play for years after its debut until publication of the play script in 1928. Barrie created Peter Pan in stories he told to the sons of his friend Sylvia Llewelyn Davies, with whom he had forged a special relationship. Mrs. Llewelyn Davies's death from cancer came within a few years after the death of her husband; Barrie was a co-guardian of the boys, and unofficially adopted them.