Gwenyth \g-wenyth, gwe-ny-th\ as a girl's name is a variant of Gwenith (Welsh), Gwendolyn (Welsh) and Gwyneth (Welsh), and the meaning of Gwenyth is "happiness; fair bow; blessed ring".
The baby name Gwenyth sounds like Gwinyth and Gweneth. Other similar baby names are Gwynith, Gwineth, Gwenneth and Gwenita.