NameCensus.

UK boy's name

Fionnlagh

Fair-haired hero or warrior of Norse and Gaelic origin.

For 2026, the newest official UK baby-name figures on this page are from 2017. That release is the current official benchmark rather than a forecast.

Fionnlagh is a boy's name in the UK records. People looking for Fionnlagh popularity in 2026 should use the latest official release, which is 2017 in this profile. In that release it ranked #4812, with 3 babies registered with the name. Its strongest year in the published records was 2013, with 6 births.

This profile covers 14 England and Wales registrations across 3 recorded years from 2009 to 2017. The figures come from ONS England and Wales and NRS Scotland, 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 50% of the recorded peak, which gives a quick read on how the name has moved since its high point.

We estimate that about 40 living people in the UK are called Fionnlagh. 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 2018 or 2026.

Key insights

  • Fionnlagh ranked #4812 for boys in England and Wales in 2017, with 3 registrations.
  • The name peaked in 2013, when 6 boys were registered as Fionnlagh.
  • Fionnlagh ranks best in Scotland in the latest published regional snapshot for that area, where it placed #535 in 2024.
  • About 40 living people in the UK are estimated to have Fionnlagh as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#4812

2017

Births in 2017

3

Latest year

Peak year

2013

6 births

Estimated living

40

2026

Meaning

What does Fionnlagh mean?

The name Fionnlagh has its origins in the Irish Gaelic language and culture, tracing back to the early medieval period of Ireland. It is a compound name derived from the Old Irish words "finn," meaning fair or white, and "lach," meaning a warrior or hero.

The earliest recorded use of the name Fionnlagh can be found in ancient Irish annals and manuscripts, where it was often associated with notable figures and warriors. One of the earliest known bearers of this name was Fionnlagh Ua Ruairc, a 12th-century king of Connacht, a province in western Ireland.

In Irish mythology, the name Fionnlagh is also connected to Fionnlagh mac Rónáin, a legendary Irish hero and warrior who is said to have lived in the 7th century. According to traditional tales, Fionnlagh mac Rónáin was renowned for his bravery and skill in battle, and his exploits were celebrated in ancient Irish literature.

Throughout the medieval and early modern periods, the name Fionnlagh remained popular among Irish families, particularly those with strong ties to the Gaelic tradition. Some notable historical figures who bore this name include Fionnlagh Ó Ceallaigh, a 16th-century Irish chieftain and leader of the Uí Bhriúin Sheanaigh, and Fionnlagh Ó Maoil Chonaire, a 15th-century Irish poet and scholar.

In more recent times, the name Fionnlagh has been carried on by individuals of Irish descent, both in Ireland and throughout the Irish diaspora. One notable bearer of the name was Fionnlagh Ó Raghallaigh, an Irish-American soldier who fought in the American Civil War and received the Medal of Honor for his bravery.

Another notable figure was Fionnlagh Ó Brolcháin, an Irish revolutionary and member of the Irish Republican Army (IRA) during the Irish War of Independence in the early 20th century. He played a significant role in the struggle for Irish independence and was later elected to the Irish Parliament.

While the name Fionnlagh has its roots in ancient Irish tradition, it has continued to be passed down through generations, carrying with it a sense of heritage, valor, and connection to Ireland's rich cultural and historical legacy.

Sourced from namecensus.com.

Popularity

Fionnlagh over time

The chart below shows babies named Fionnlagh registered in England and Wales in the years where the name appears in the published records, from 2009 to 2017. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.

For Fionnlagh, the clearest high point is 2013. The latest England and Wales figure is 3 births in 2017, compared with 6 at the peak.

Babies born per year

Fionnlagh
02356200920132017

Decades

Fionnlagh by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Fionnlagh 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
2010s #3883 9 2
2000s #3227 5 1

Geography

Where Fionnlagh is most common

The bars show the latest published local birth counts for Fionnlagh. They are useful for spotting where the name is showing up in real numbers, while the rank beside each bar shows how strongly it performs inside that region.

Fionnlagh ranks best in Scotland in the latest published regional snapshot for that area, where it placed #535 in 2024.

Scotland
5

Across the UK

Fionnlagh in Scotland and Northern Ireland

Scotland (NRS)

#535 in 2024

7 years of NRS records, 26 total registered

Related

Names similar to Fionnlagh

FAQ

Fionnlagh: questions and answers

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

In 2017, Fionnlagh was ranked #4812 for boys in England and Wales, with 3 births registered.

When was Fionnlagh most popular?

The peak year on record was 2013, with 6 babies registered as Fionnlagh in England and Wales.

What is the meaning and origin of Fionnlagh?

Fair-haired hero or warrior of Norse and Gaelic origin.

How many people are called Fionnlagh in the UK?

A total of 14 babies have been registered as Fionnlagh across the 3 years of ONS England & Wales records shown here, plus 26 more in Scotland.

Where is Fionnlagh most common?

In the latest published local rankings, Fionnlagh ranks best in Scotland, where it placed #535 in 2024. The regional bars on this page use birth counts, so they also reflect the size of each region.

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.