Twitter Google Share on Facebook Gwynedd (redirected fromGwyneth) Encyclopedia Wikipedia Gwynedd (ˈɡwɪnɛð) n (Placename) a county of NW Wales, formed in 1974 from Anglesey, Caernarvonshire, part of Denbighshire, and most of Merionethshire; lost Anglesey and part of the NE in 1996...