Catelyn is a distinctive girls' name in United States, ranking #3357 in 2015 with 48 recorded births. The name reached its all-time peak in 2006 with 108 births ranking #1879. Since 1996, the popularity has decreased by 30.4%. In 2015, approximately 1 in every 37,180 girls born was named Catelyn. FALLING Recent data shows the name is currently falling.