Catelyn is a distinctive girls' name in United States, ranking #2124 in 2010 with 93 recorded births. The name reached its all-time peak in 2006 with 108 births ranking #1879. Since 1996, the popularity has increased by 34.8%. In 2010, approximately 1 in every 19,111 girls born was named Catelyn. FALLING Recent data shows the name is currently falling.