Catelyn is a distinctive girls' name in United States, ranking #1873 in 2000 with 91 recorded births. The name reached its all-time peak in 2006 with 108 births ranking #1879. Since 1996, the popularity has increased by 31.9%. In 2000, approximately 1 in every 19,956 girls born was named Catelyn. FALLING Recent data shows the name is currently falling.