Wynn is an attractive Welsh name, originally male but now also used for girls outside of Wales. The authentic feminine version would be Gwen, which derives from the same very productive gwyn element, making it a relative of all Welsh names ending -wyn or -wen, as well as the Irish Fin- names.

This is one surname-name that may swing decidedly to the male side, thanks to highly-visible young actor Alden Ehrenreich.