Gwyn was first listed in 1940-1949 and reached its apex rank of #1303 in the U.S. during 1960-1969, but is not in the list at the moment. (TOP 2000 NAMES, 2015)
Which version is better?with its variant forms and related girl names. Gwendolyn (#404 THE PREVIOUS YEAR), Gwen (#746), Gwyneth (#1091), Guinevere (#1336) and Gwynne are the prominent alternative forms of Gwyn. Other variants, like Gwynedd, are seldom used. These forms of Gwyn were at the height of their popularity in the 1950s (MEDIAN #1293) and have become much less widespread since (#1262, DOWN 51.2%).
Gwyn is pronounced similarly to Gunne and Gwenn. Other recommended names are Anwyn, Arwyn, Aryn, Ayn, Bryn, Cyn, Edyn, Elyn, Eryn, Gay▼, Gaye, Gayna, Glen, Glyn, Glynn, Gwynda, Jyn, Lyn, Olwyn and Wyn. These names tend to be less frequently used than Gwyn.See names in meaning and etymology.