Meaning A girl's name of Welsh origin, it means "Fair; blessed Origin of Gwyndolyn Welsh +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Gwyndolyn Similar Names Rhonwen Rhona Gweneth Gwendelyn Gwendoline Gwenna Gwyn Gwynn Gwendi Gwynneth Year by Year Popularity of Gwyndolyn