Gwendalyn is a distinctive girls' name in United States, ranking #3620 in 2007 with 45 recorded births. The name reached its all-time peak in 2008 with 48 births ranking #3444. Since 1996, the popularity has increased by 246.2%. In 2007, approximately 1 in every 42,721 girls born was named Gwendalyn. FALLING Recent data shows the name is currently falling.