Gwynneth is a distinctive girls' name in United States, ranking #9031 in 1999 with 10 recorded births. The name reached its all-time peak in 2001 with 16 births ranking #6725. Since 1996, the popularity has increased by 42.9%. In 1999, approximately 1 in every 177,378 girls born was named Gwynneth. STABLE Recent data shows the name is currently stable.