Gwendalyn is a distinctive girls' name in United States, ranking #4175 in 2015 with 35 recorded births. The name reached its all-time peak in 2008 with 48 births ranking #3444. Since 1996, the popularity has increased by 169.2%. In 2015, approximately 1 in every 50,990 girls born was named Gwendalyn. FALLING Recent data shows the name is currently falling.