Definition from Wiktionary, the free dictionary
See also wendy
Popularized by the character in J.M. Barrie's play, Peter Pan (1904) (though occasionally found earlier); the author explained that he got it from Fwendy-Wendy ("friend"), a nickname given to him by a child.
Proper noun 
- A female given name.
- ^ Search Results for International Genealogical Index (IGI) https://familysearch.org/search/records/index#count=20&query=%2Bgivenname%3Awendy~%20%2Bany_year%3A1800-1900~%20%2Bsubcollection_id%3A5