Gwendalyn is a distinctive girls' name in United States, ranking #4426 in 2004 with 31 recorded births. The name reached its all-time peak in 2008 with 48 births ranking #3444. Since 1996, the popularity has increased by 138.5%. In 2004, approximately 1 in every 59,230 girls born was named Gwendalyn. FALLING Recent data shows the name is currently falling.