Catelyn is a distinctive girls' name in United States, ranking #1913 in 2005 with 101 recorded births. The name reached its all-time peak in 2006 with 108 births ranking #1879. Since 1996, the popularity has increased by 46.4%. In 2005, approximately 1 in every 18,294 girls born was named Catelyn. FALLING Recent data shows the name is currently falling.