UK boy's name
Fidelis
A masculine Latin name meaning "faithful" or "loyal".
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.
Fidelis is a boy's name in the UK records. People looking for Fidelis popularity in 2026 should use the latest official release, which is 2023 in this profile. In that release it ranked #4991, with 3 babies registered with the name. Its strongest year in the published records was 2014, with 3 births.
This profile covers 6 England and Wales registrations across 2 recorded years from 2014 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.
The latest count is about 100% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 6 living people in the UK are called Fidelis. 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
- • Fidelis ranked #4991 for boys in England and Wales in 2023, with 3 registrations.
- • The name peaked in 2014, when 3 boys were registered as Fidelis.
- • About 6 living people in the UK are estimated to have Fidelis as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#4991
2023
Births in 2023
3
Latest year
Peak year
2014
3 births
Estimated living
6
2026
Meaning
What does Fidelis mean?
The name Fidelis finds its roots in Latin, derived from the word "fidelis," meaning "faithful" or "loyal." This name gained prominence during the late Roman period and the early Christian era.
In the 3rd century, there lived a Christian martyr named Fidelis of Sigmaringen, who was killed for his faith in 304 AD in present-day Germany. His unwavering devotion to Christianity earned him the name Fidelis, which means "faithful one." His feast day is celebrated on April 24th in the Catholic Church.
Another notable bearer of this name was Fidelis of Comerio, an Italian Capuchin friar who lived in the late 16th and early 17th centuries. He was canonized as a saint in 1671 for his missionary work and his commitment to spreading the Catholic faith. His feast day is celebrated on April 24th, coinciding with that of Fidelis of Sigmaringen.
In the realm of literature, Fidelis appears as a character in the 17th-century play "The Faithful Shepherdess" by John Fletcher, further cementing the name's association with faithfulness and loyalty.
Moving into the modern era, Fidelis Andrelini (1460-1518) was an Italian poet and scholar who gained recognition for his Latin poetry and his contributions to the revival of classical learning during the Renaissance.
Fidelis Clorivière (1735-1820) was a French priest and the founder of the Congregation of the Blessed Sacrament, a religious order dedicated to the veneration of the Eucharist.
While the name Fidelis has its historical roots in Christianity, it has transcended religious boundaries and has been embraced by various cultures, albeit with varying levels of popularity. Its enduring meaning of loyalty and faithfulness has ensured its place in the annals of given names throughout history.
Sourced from namecensus.com.
Popularity
Fidelis over time
The chart below shows babies named Fidelis registered in England and Wales in the years where the name appears in the published records, from 2014 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 Fidelis, the clearest high point is 2014. The latest England and Wales figure is 3 births in 2023, compared with 3 at the peak.
Babies born per year
Decades
Fidelis by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Fidelis 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 | #4991 | 3 | 1 |
| 2010s | #4632 | 3 | 1 |
Related
Names similar to Fidelis
- Freddie 46,945
- Finley 42,410
- Frederick 19,866
- Finlay 17,879
- Frankie 17,528
- Finn 14,413
- Felix 14,361
- Fraser 6,470
- Flynn 6,170
- Frank 5,992
- Filip 5,876
- Francis 5,744
FAQ
Fidelis: questions and answers
How popular is the name Fidelis in the UK right now?
In 2023, Fidelis was ranked #4991 for boys in England and Wales, with 3 births registered.
When was Fidelis most popular?
The peak year on record was 2014, with 3 babies registered as Fidelis in England and Wales.
What is the meaning and origin of Fidelis?
A masculine Latin name meaning "faithful" or "loyal".
How many people are called Fidelis in the UK?
A total of 6 babies have been registered as Fidelis across the 2 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.