UK boy's name
Deaglan
A masculine given name of Irish origin meaning "full of goodness".
For 2026, the newest official UK baby-name figures on this page are from 2021. That release is the current official benchmark rather than a forecast.
Deaglan is a boy's name in the UK records. People looking for Deaglan popularity in 2026 should use the latest official release, which is 2021 in this profile. In that release it ranked #4789, with 3 babies registered with the name. Its strongest year in the published records was 1998, with 6 births.
This profile covers 35 England and Wales registrations across 9 recorded years from 1997 to 2021. The figures come from ONS England and Wales and NISRA Northern Ireland, 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 108 living people in the UK are called Deaglan. 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 2022 or 2026.
Key insights
- • Deaglan ranked #4789 for boys in England and Wales in 2021, with 3 registrations.
- • The name peaked in 1998, when 6 boys were registered as Deaglan.
- • Deaglan ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #404 in 2024.
- • About 108 living people in the UK are estimated to have Deaglan as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#4789
2021
Births in 2021
3
Latest year
Peak year
1998
6 births
Estimated living
108
2026
Meaning
What does Deaglan mean?
The name Deaglan is an Irish Gaelic name derived from the Old Irish word "deaghlán," which means "good or perfect little one." This name has its origins in the Celtic culture of Ireland and is believed to have been in use as early as the 5th century AD.
The name Deaglan was popular among the ancient Irish people, particularly those living in the northern and western regions of the island. It was often given to children in the hope that they would grow up to be virtuous and righteous individuals. The name's meaning reflects the high value placed on moral character and integrity in Irish culture.
In historical records, the earliest known reference to the name Deaglan can be found in the Annals of Ulster, a chronicle of medieval Irish history. This text mentions a man named Deaglan mac Cairill, who was the abbot of the monastery of Bangor in County Down, Northern Ireland, in the 7th century AD.
One of the most famous historical figures bearing the name Deaglan was Saint Deaglan of Ardmore, who lived in the 6th century AD. He was a Irish Christian missionary and the founder of the monastery of Ardmore in County Waterford, Ireland. Saint Deaglan is venerated in the Catholic Church, and his feast day is celebrated on March 18th.
Another notable figure named Deaglan was Deaglan of Lough Derg, a 6th-century Irish monk who is credited with establishing the famous monastic settlement on Station Island in Lough Derg, County Donegal. This site became a popular destination for pilgrims and remains an important place of religious significance in Ireland today.
In the 9th century, a man named Deaglan mac Conchobair was the King of Connacht, a historic province in the west of Ireland. He is mentioned in the Annals of Ulster as having led successful military campaigns against rival Irish kingdoms.
In more recent times, the name Deaglan has been carried by notable individuals such as Deaglan de Breadun, an Irish journalist and author born in 1949, and Deaglan O'Mahony, an Irish Gaelic footballer who played for the Cork senior football team in the late 20th century.
Sourced from namecensus.com.
Popularity
Deaglan over time
The chart below shows babies named Deaglan registered in England and Wales in the years where the name appears in the published records, from 1997 to 2021. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.
For Deaglan, the clearest high point is 1998. The latest England and Wales figure is 3 births in 2021, compared with 6 at the peak.
Babies born per year
Decades
Deaglan by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Deaglan 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 | #4789 | 3 | 1 |
| 2010s | #4812 | 3 | 1 |
| 2000s | #3123 | 14 | 4 |
| 1990s | #2177 | 15 | 3 |
Geography
Where Deaglan is most common
The bars show the latest published local birth counts for Deaglan. 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.
Deaglan ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #404 in 2024.
Across the UK
Deaglan in Scotland and Northern Ireland
Northern Ireland (NISRA)
#404 in 2024
15 years of NISRA records, 74 total registered
Related
Names similar to Deaglan
- Daniel 120,900
- Dylan 60,836
- David 37,852
- Dominic 20,480
- Declan 11,657
- Dexter 11,627
- Danny 8,434
- Dean 5,329
- Dillon 4,113
- Douglas 3,773
- Dominik 3,494
- Damian 3,486
FAQ
Deaglan: questions and answers
How popular is the name Deaglan in the UK right now?
In 2021, Deaglan was ranked #4789 for boys in England and Wales, with 3 births registered.
When was Deaglan most popular?
The peak year on record was 1998, with 6 babies registered as Deaglan in England and Wales.
What is the meaning and origin of Deaglan?
A masculine given name of Irish origin meaning "full of goodness".
How many people are called Deaglan in the UK?
A total of 35 babies have been registered as Deaglan across the 9 years of ONS England & Wales records shown here and 74 in Northern Ireland.
Where is Deaglan most common?
In the latest published local rankings, Deaglan ranks best in Northern Ireland, where it placed #404 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.