Over the past 110 years, 114 837 girls have been named Gwendolyn. The name Gwendolyn ranks 300th in the United States among the most common names for girls. For the first time more than ten times newborns were named Gwendolyn in 1910. The peak of popularity of the name Gwendolyn came in the 1940s and 1950s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.