MallowbyNames

Catelyn

KAT-lin · A modern spelling variant of Caitlin, an Irish form of Catherine, meaning 'pure'.

Peak popularity
2006
Usually for
Girls
Trend
Declining since 2005

Declining since 2005.

Popularity of Catelyn since 1985

Babies named Catelyn per year in U.S. Social Security records.

36721081990200020102020Most births 2006Girls
Data table (by decade)
DecadeGirls
1980s172
1990s663
2000s918
2010s501
2020s40

Meaning & origin

Catelyn first appeared on U.S. records in 1985 and rose quickly in popularity, peaking in 2006. Since then it has been on a steady decline, falling out of the top 1000 after 2005. The name is a respelling of Caitlin, which itself became popular in the 1980s and 1990s. While Catelyn is relatively recent, it connects to the ancient name Catherine, rooted in the Greek word for 'pure'. Its popularity spike was likely influenced by the character Catelyn Stark from the A Song of Ice and Fire books and the Game of Thrones television series. However, the name has not maintained its momentum and has been decreasing in use.

Catelyn is a modern respelling of Caitlin, the Irish form of Catherine. The name Catherine derives from the Greek Aikaterine, which has been associated with the Greek word katharos, meaning 'pure'. It entered Irish usage through the Norman French version, Cateline, and became popular in Ireland. The Catelyn spelling emerged in the late 20th century, partly influenced by the character Catelyn Stark in George R.R. Martin's A Song of Ice and Fire series (first published 1996).

Nicknames & variants

Nicknames: Cat, Cate, Cathy, Lyn

Variants: Caitlin, Katelyn, Cathleen, Catelynne

Sibling names for Catelyn

Names that share Catelyn's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

C is for Catelyn, our favorite little girl.

C is for Catelyn…”

In a Mallowby alphabet book, Catelyn's letter becomes Catelyn's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Catelyn's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Catelyn mean?
Catelyn is a modern spelling variant of Caitlin, which means 'pure'.
How popular is the name Catelyn currently?
Catelyn has been declining in popularity since its peak in 2005, and it no longer ranks in the top 1000 as of 2025.
Is Catelyn a boy or girl name?
Catelyn is almost exclusively used as a girl's name.