Elwynne \e-lwynne, elw(yn)-ne\ as a boy's name is a variant of Elvin (Old English), and the meaning of Elwynne is "elf or magical being, friend". The baby name Elwynne sounds like Elwynn, Elwyn, Alwynn, Elwinn and Walwynne. Other similar baby names are Eldwynn, Erwynn, Ewynn and Selwynne.