UK boy's name
Guillaume
A French masculine given name derived from Germanic roots meaning "resolute protector".
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.
Guillaume is a boy's name in the UK records. People looking for Guillaume popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #5119, with 3 babies registered with the name. Its strongest year in the published records was 1999, with 13 births.
This profile covers 128 England and Wales registrations across 21 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 23% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 127 living people in the UK are called Guillaume. 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
- • Guillaume ranked #5119 for boys in England and Wales in 2024, with 3 registrations.
- • The name peaked in 1999, when 13 boys were registered as Guillaume.
- • About 127 living people in the UK are estimated to have Guillaume as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#5119
2024
Births in 2024
3
Latest year
Peak year
1999
13 births
Estimated living
127
2026
Meaning
What does Guillaume mean?
The given name Guillaume originates from the Germanic languages, with roots tracing back to the 8th century. It is a French form of the Germanic name Willahelm, derived from the elements "wil" meaning "will" or "desire" and "helm" meaning "helmet" or "protection." The name evolved into Guillelmus in Latin, then Guillaume in Old French.
The name gained prominence during the Norman conquest of England in 1066, when William the Conqueror (c. 1028-1087), also known as Guillaume le Conquérant, led the Norman invasion and became the first Norman king of England. This significant historical event contributed to the widespread use of the name Guillaume across Europe.
In the 12th century, the French philosopher and logician William of Ockham (c. 1287-1347), also known as Guillaume d'Ockham, rose to prominence with his influential philosophical principles, including Occam's razor. His works had a lasting impact on medieval philosophy and the development of modern scientific thought.
Another notable figure was William of Tyre (c. 1130-1186), a medieval chronicler and archbishop whose full name was Guillaume de Tyr. His work, Historia rerum in partibus transmarinis gestarum, is considered one of the most influential accounts of the Crusades.
In the 16th century, Guillaume Budé (1467-1540), a French scholar and humanist, played a crucial role in the revival of classical studies and the promotion of humanism during the Renaissance period.
The 17th century saw the rise of the French composer Guillaume Dufay (c. 1397-1474), a prominent figure in the Burgundian School and one of the earliest composers to gain widespread recognition across Europe.
These are just a few examples of the many notable individuals throughout history who bore the name Guillaume, reflecting its enduring presence and significance across various fields and eras.
Sourced from namecensus.com.
Popularity
Guillaume over time
The chart below shows babies named Guillaume 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 Guillaume, the clearest high point is 1999. The latest England and Wales figure is 3 births in 2024, compared with 13 at the peak.
Babies born per year
Decades
Guillaume by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Guillaume 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 | #5119 | 3 | 1 |
| 2010s | #3630 | 34 | 7 |
| 2000s | #2524 | 57 | 9 |
| 1990s | #1500 | 34 | 4 |
Related
Names similar to Guillaume
- George 121,258
- Gabriel 20,581
- Grayson 7,636
- Gregory 2,925
- Guy 2,646
- Gareth 2,092
- Gethin 1,880
- Georgie 1,872
- Gary 1,575
- Gavin 1,422
- Giovanni 1,252
- Grant 1,199
FAQ
Guillaume: questions and answers
How popular is the name Guillaume in the UK right now?
In 2024, Guillaume was ranked #5119 for boys in England and Wales, with 3 births registered.
When was Guillaume most popular?
The peak year on record was 1999, with 13 babies registered as Guillaume in England and Wales.
What is the meaning and origin of Guillaume?
A French masculine given name derived from Germanic roots meaning "resolute protector".
How many people are called Guillaume in the UK?
A total of 128 babies have been registered as Guillaume across the 21 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.