Gweneth is a distinctive girls' name in United States, ranking #3585 in 2009 with 45 recorded births. The name reached its all-time peak in 2008 with 52 births ranking #3233. Since 1996, the popularity has increased by 800.0%. In 2009, approximately 1 in every 40,819 girls born was named Gweneth. RISING Recent data shows the name is currently rising.