NameCensus.

UK boy's name

Llewellyn

A masculine Welsh name meaning "leader" or "lion-like".

For 2026, the newest official UK baby-name figures on this page are from 2024. That release is the current official benchmark rather than a forecast.

Llewellyn is a boy's name in the UK records. People looking for Llewellyn popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #2671, with 8 babies registered with the name. Its strongest year in the published records was 2004, with 17 births.

This profile covers 250 England and Wales registrations across 29 recorded years from 1996 to 2024. The figures come from ONS England and Wales, so the page is a view of published baby-name registrations rather than a forecast or a live count of people using the name today.

The latest count is about 47% of the recorded peak, which gives a quick read on how the name has moved since its high point.

We estimate that about 248 living people in the UK are called Llewellyn. This uses published birth registrations from England and Wales, Scotland and Northern Ireland, then applies ONS national life tables to estimate how many are likely still alive. It does not forecast extra births for 2025 or 2026.

Key insights

  • Llewellyn ranked #2671 for boys in England and Wales in 2024, with 8 registrations.
  • The name peaked in 2004, when 17 boys were registered as Llewellyn.
  • About 248 living people in the UK are estimated to have Llewellyn as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#2671

2024

Births in 2024

8

Latest year

Peak year

2004

17 births

Estimated living

248

2026

Meaning

What does Llewellyn mean?

The name Llewellyn has its origins in the Welsh language and culture, dating back to the Middle Ages. It is a traditionally masculine name derived from the Welsh words "llyw" meaning "leader" and "llyn" meaning "lake" or "pool." The name was initially spelled as "Llywelyn" or "Llewelyn" in its early forms.

This name was particularly prominent among the Welsh nobility and royalty during the medieval period. One of the earliest recorded instances of the name can be found in the figure of Llywelyn ap Seisyll, a king of Gwynedd in the early 7th century. His grandson, Llywelyn the Great (c. 1173-1240), was a renowned ruler who successfully united and strengthened the Welsh principalities against English domination.

Another notable figure bearing this name was Llywelyn ap Gruffydd (c. 1223-1282), also known as Llywelyn the Last, who was the last sovereign Prince of Wales before the conquest of Wales by King Edward I of England. His resistance against English rule and his ultimate execution marked the end of an independent Welsh principality.

During the Middle Ages, the name Llewellyn also appeared in various Welsh manuscripts and chronicles, such as the Brut y Tywysogion (Chronicle of the Princes) and the Mabinogion, a collection of medieval Welsh prose tales.

In later centuries, the name Llewellyn continued to be used, albeit less frequently. One notable bearer was Llewellyn Jewitt (1816-1886), an English antiquarian and writer who contributed significantly to the study of ceramics and church architecture.

Another prominent figure was Llewellyn Frederick William Llewellyn (1858-1941), a Welsh lawyer and politician who served as the Speaker of the House of Commons of the United Kingdom from 1920 to 1928.

In the literary world, Llewellyn Powys (1884-1939) was a British writer and essayist, known for his works exploring the themes of mysticism and philosophy. His brother, John Cowper Powys (1872-1963), was also a renowned novelist and philosopher who occasionally used the name "Llewellyn" as a pen name.

While the name Llewellyn has its roots in Welsh culture and history, it has also been adopted by individuals from various backgrounds, particularly those with an appreciation for its unique and distinctive sound.

Sourced from namecensus.com.

Popularity

Llewellyn over time

The chart below shows babies named Llewellyn registered in England and Wales in the years where the name appears in the published records, from 1996 to 2024. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.

For Llewellyn, the clearest high point is 2004. The latest England and Wales figure is 8 births in 2024, compared with 17 at the peak.

Babies born per year

Llewellyn
0491317199620102024

Decades

Llewellyn by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Llewellyn was a short-lived spike or a name that stayed in regular use. Average rank is calculated only from years where a published rank exists.

Decade Average rank Total births Years covered
2020s #2939 33 5
2010s #2568 80 10
2000s #1722 108 10
1990s #1658 29 4

Related

Names similar to Llewellyn

FAQ

Llewellyn: questions and answers

How popular is the name Llewellyn in the UK right now?

In 2024, Llewellyn was ranked #2671 for boys in England and Wales, with 8 births registered.

When was Llewellyn most popular?

The peak year on record was 2004, with 17 babies registered as Llewellyn in England and Wales.

What is the meaning and origin of Llewellyn?

A masculine Welsh name meaning "leader" or "lion-like".

How many people are called Llewellyn in the UK?

A total of 250 babies have been registered as Llewellyn across the 29 years of ONS England & Wales records shown here.

Which records is this page based on?

The England and Wales timeline uses ONS baby-name records. Scotland figures come from NRS and Northern Ireland figures come from NISRA. Counts are registrations in published baby-name files. The living estimate uses those birth registrations with ONS national life tables.