Will my child share the name Gwenllian with classmates?

Unlikely. With around 18 UK babies named Gwenllian per year, your child will almost certainly be the only Gwenllian in their class, and possibly the only one in the whole school.

Is Gwenllian becoming more or less popular in the UK?

Gwenllian is rising: up 403 places since 2020, to #1,639 in 2025. Its best recorded position was #1,074 in 1997.

Is Gwenllian a good choice for a distinctive name?

Gwenllian is a distinctive choice sitting outside the mainstream UK top names. Parents choosing less common names often find their children appreciate the individuality as they grow up, rarely needing to add an initial to distinguish themselves.

Who are some famous people named Gwenllian?

Notable people named Gwenllian include: Gwenllian Pyrs and Siân Gwenllian.

Is Gwenllian a popular baby name in the United States?

Gwenllian does not appear in the US top 1,000 baby names, making it a distinctively British choice.

👧 Girl's name 💎 Relatively Unique UK #1639

Gwenllian

🗳️ Add Gwenllian to a family shortlist

Gwenllian is a distinctive choice, ranked #1639 in 2025. Your child is likely to be the only Gwenllian in their class.

💎

UK Rank 2025

#1639

About the Name Gwenllian

Gwenllian is climbing rapidly up the charts, having climbed 299 places in just five years. Its best recorded rank was #1074 in 1997 — and current momentum suggests it could challenge that mark again. The name has been a consistent presence in UK records since 1996.

Gwenllian is uncommon in the UK, so your child is very likely to be the only Gwenllian in their class.

⭐ Famous People Named Gwenllian

Gwenllian Pyrs — Gwenllian Pyrs is a Welsh rugby union player who plays loosehead prop for the Wales women's national rugby union team and Sale Sharks Women of Premier 15s.
Gwenllian ferch Gruffudd — Gwenllian ferch Gruffudd was a 12th-century Welsh rebel.
Gwenllian of Wales — Gwenllian ferch Llywelyn, commonly known as Gwenllian of Wales, was the daughter of Eleanor de Montfort and Llywelyn ap Gruffudd, the last native Prince of Wales (Welsh: Tywysog Cymru).

Biographical summaries are shortened from Wikipedia and are used under the CC BY-SA 4.0 licence; those summaries remain available under that same licence.

Frequently Asked Questions

Common questions about the name Gwenllian

UK babies named Gwenllian (2025)

< 1

Expected classmates with this name (class of 28)

~0.0

In a school of 600

↑ 403 places

Rank change (last 5 years)

🏫 Who else is in the room?

In a typical UK class of 28, highlighted children share the name Gwenllian

Almost certainly the only Gwenllian in the class

UK Popularity (1996–2025)

Rank and birth count · ONS official data

No US data available for this name

✨ Similar names to Gwenllian

Names with a similar style — each with their own classroom story

→

→

→

→

🔮

Check another name

Enter any baby name to get UK and US popularity data, classroom predictions and trend charts.

🔮 Try the Name Checker 📚 Browse All Names

Famous People Named Gwenllian

Notable people who share this name, from history to the present day. See full list on Wikipedia

Gwenllian Pyrsb. 1997

Gwenllian Pyrs is a Welsh rugby union player who plays loosehead prop for the Wales women's national rugby union team and Sale Sharks Women of Premier 15s.

Gwenllian ferch Gruffudd

Gwenllian ferch Gruffudd was a 12th-century Welsh rebel.

Gwenllian of Wales

Gwenllian ferch Llywelyn, commonly known as Gwenllian of Wales, was the daughter of Eleanor de Montfort and Llywelyn ap Gruffudd, the last native Prince of Wales (Welsh: Tywysog Cymru).

Siân Gwenllian

Siân Gwenllian is a Welsh Plaid Cymru politician who has represented the constituency of Arfon in the Senedd since 2016.