NameCensus.

UK boy's name

Brennon

A masculine name possibly derived from the Gaelic Irish name Brennan meaning "descendent of the sad one".

For 2026, the newest official UK baby-name figures on this page are from 2023. That release is the current official benchmark rather than a forecast.

Brennon is a boy's name in the UK records. People looking for Brennon popularity in 2026 should use the latest official release, which is 2023 in this profile. In that release it ranked #4107, with 4 babies registered with the name. Its strongest year in the published records was 2023, with 4 births.

This profile covers 25 England and Wales registrations across 8 recorded years from 1996 to 2023. 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.

Brennon is at its recorded peak in the England and Wales series.

We estimate that about 25 living people in the UK are called Brennon. 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 2024 or 2026.

Key insights

  • Brennon ranked #4107 for boys in England and Wales in 2023, with 4 registrations.
  • The name peaked in 2023, when 4 boys were registered as Brennon.
  • About 25 living people in the UK are estimated to have Brennon as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#4107

2023

Births in 2023

4

Latest year

Peak year

2023

4 births

Estimated living

25

2026

Meaning

What does Brennon mean?

The name Brennon has its origins in the ancient Celtic culture, tracing back to the early Middle Ages. It is derived from the Gaelic word "brennyn," which means "prince" or "king's son." The name was initially popular among the Celtic tribes that inhabited parts of modern-day Ireland, Scotland, and Wales.

In the early medieval period, the name Brennon was commonly used by the ruling families and nobility of Celtic kingdoms. It carried a sense of prestige and authority, reflecting the bearer's royal lineage or connections to the royal household. The name's association with nobility and power was likely a driving force behind its widespread adoption during that era.

While no specific historical references to individuals named Brennon have been found in ancient texts or religious scriptures, the earliest recorded examples of the name can be traced back to the 7th century CE. One of the earliest known bearers of the name was Brennon of Clonmacnoise, an Irish monk and scholar who lived in the late 7th century and is renowned for his contributions to the preservation of ancient manuscripts.

Throughout history, several notable individuals have borne the name Brennon. One such figure was Brennon of Moray (c. 1095 - c. 1155), a Scottish nobleman who played a significant role in the political struggles of his time and is remembered for his involvement in the Battle of Standard in 1138.

Another historical figure with the name Brennon was Brennon of Brittany (c. 1150 - c. 1220), a Breton nobleman and military commander who fought in the Third Crusade alongside King Richard I of England. His exploits during the Crusades earned him a reputation as a skilled warrior and leader.

In the 14th century, Brennon of Glamorgan (c. 1320 - c. 1380) was a Welsh landowner and nobleman who played a significant role in the conflicts between England and Wales during the reign of Edward III. He is remembered for his efforts to preserve Welsh culture and traditions in the face of English dominance.

Moving forward in time, Brennon O'Donnell (c. 1580 - c. 1650) was an Irish chieftain and military leader who fought against English rule in Ireland during the early 17th century. He is celebrated as a symbol of Irish resistance and independence during a turbulent period in Irish history.

Lastly, Brennon MacLeod (c. 1730 - c. 1805) was a Scottish Gaelic poet and bard who is renowned for his contributions to the preservation of Scottish Gaelic literature and folklore. His works provide a valuable insight into the cultural traditions and oral histories of the Scottish Highlands during the 18th century.

Sourced from namecensus.com.

Popularity

Brennon over time

The chart below shows babies named Brennon registered in England and Wales in the years where the name appears in the published records, from 1996 to 2023. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.

For Brennon, the clearest high point is 2023. The latest England and Wales figure is 4 births in 2023, compared with 4 at the peak.

Babies born per year

Brennon
01234199620092023

Decades

Brennon by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Brennon 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 #4358 7 2
2000s #3694 12 4
1990s #2903 6 2

Related

Names similar to Brennon

FAQ

Brennon: questions and answers

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

In 2023, Brennon was ranked #4107 for boys in England and Wales, with 4 births registered.

When was Brennon most popular?

The peak year on record was 2023, with 4 babies registered as Brennon in England and Wales.

What is the meaning and origin of Brennon?

A masculine name possibly derived from the Gaelic Irish name Brennan meaning "descendent of the sad one".

How many people are called Brennon in the UK?

A total of 25 babies have been registered as Brennon across the 8 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.