It was not until the 1900s that the name Wendy was introduced as a female name. Although 'Wendy' appears as a boy's name in the 1881 census of England, it was made popular by the character Wendy Darling from the children's novel Peter Pan by J.M. Barrie. Wendy was inspired by the daughter of a friend of Barrie's Margaret Henley, who died at the age of four. Little Margaret called the writer 'my fwendy-wendy' and Barrie immortalized her in his novel after her death.