Gwendalyn is a distinctive girls' name in United States, ranking #4217 in 2009 with 36 recorded births. The name reached its all-time peak in 2008 with 48 births ranking #3444. Since 1996, the popularity has increased by 176.9%. In 2009, approximately 1 in every 51,024 girls born was named Gwendalyn. FALLING Recent data shows the name is currently falling.