Gwendalyn is a distinctive girls' name in United States, ranking #6036 in 2000 with 18 recorded births. The name reached its all-time peak in 2008 with 48 births ranking #3444. Since 1996, the popularity has increased by 38.5%. In 2000, approximately 1 in every 100,887 girls born was named Gwendalyn. FALLING Recent data shows the name is currently falling.