Meaning and name origin
Gwendalyn \gwe-ndal-yn, gwen-da-lyn\ as a girl's name is of Welsh origin, and the meaning of Gwendalyn is "fair bow; blessed ring". Gwendalyn is a variant of Gwendolyn (Welsh): in some legends, Merlin the magician has a wife named Gwendolyn.
Gwendalyn is not a popular first name for females and an equally uncommon surname or last name for all people (Source: 2000 U.S. Population Census).
Displayed below is a comparison of the popularity of the girl name Gwendalyn and its variant forms. The only popular variation form ranked in the Top 1000/100 is Gwendolyn (#420). (Source: 2014 Birth Name Statistics).