Catelyn is a distinctive girls' name in United States, ranking #2243 in 2001 with 72 recorded births. This places Catelyn in the top 12% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2006 with 108 births ranking #1879. In 2001, approximately 1 in every 25,008 girls born was named Catelyn. FALLING Recent data shows the name is currently falling.