Gwendalyn is a distinctive girls' name in United States, ranking #4433 in 2010 with 33 recorded births. The name reached its all-time peak in 2008 with 48 births ranking #3444. Since 1996, the popularity has increased by 153.8%. In 2010, approximately 1 in every 53,858 girls born was named Gwendalyn. FALLING Recent data shows the name is currently falling.