Gwynneth is a distinctive girls' name in United States, ranking #6725 in 2001 with 16 recorded births. The name reached its all-time peak in 2001 with 16 births ranking #6725. Since 1996, the popularity has increased by 128.6%. In 2001, approximately 1 in every 112,535 girls born was named Gwynneth. STABLE Recent data shows the name is currently stable.