Brennox
Of unknown origin, potentially a combination of elements relating to fire or burning.
Name Census estimates that about 5 living Americans carry the first name Brennox. The name is used almost exclusively for boys. The average person named Brennox today is around 8 years old, and the year with the single highest number of Brennox births was 2018 (5 babies).
This page is the full Name Census profile for Brennox. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
Key insights
- • Fewer than 100 living Americans are believed to carry the name Brennox. It is among the rarest names in the SSA records.
People living today
5
~ 1 in 68,550,868 Americans
Peak year
2018
5 babies that year
Average age
8
years old
2018 SSA rank
#12,439
Tracked since 2018
Popularity
Brennox: popularity over time
Babies born per year
Decades
Brennox by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Brennox during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
| Decade | Male | Female | Total |
|---|---|---|---|
| 2010s | 5 | 0 | 5 |
Origin
Meaning and history of Brennox
The name Brennox has its origins in the ancient Celtic culture, tracing back to the early medieval period around the 5th century AD. It is derived from the Proto-Celtic root "bren," meaning "hill" or "high place," and the suffix "-ox," which likely evolved from the Celtic word for "son" or "descendant."
One of the earliest recorded instances of the name Brennox can be found in the Leabhar na hUidhre, an ancient Irish manuscript dating back to the 12th century. In this text, Brennox is mentioned as the name of a legendary warrior who fought alongside the legendary Irish hero Finn MacCool.
During the Middle Ages, the name Brennox gained prominence among the Celtic nobility and warrior classes. It was particularly popular in regions such as Wales, Cornwall, and Brittany. One notable figure bearing this name was Brennox ap Cadwallon, a Welsh prince who led a rebellion against the Norman invaders in the 11th century.
As the name spread across Europe, it underwent various spelling variations, such as Brennox, Brennoch, and Brennoch. In the 13th century, a Brennox de Montfort was recorded as a knight who fought in the Crusades and later became a prominent landowner in England.
During the Renaissance period, the name Brennox experienced a resurgence in popularity, particularly among the intellectual and artistic circles. One of the most renowned figures with this name was Brennox Galilei, an Italian mathematician and astronomer born in 1564, who made significant contributions to the scientific revolution.
In the 18th century, Brennox Rousseau, a French philosopher and writer, gained fame for his influential works on political theory and education. His seminal work, "The Social Contract," published in 1762, had a profound impact on the development of modern political thought.
Other notable figures bearing the name Brennox include Brennox Maxwell, a Scottish scientist born in 1831, who made groundbreaking contributions to the field of electromagnetism, and Brennox Picasso, a Spanish artist born in 1881, who is widely regarded as one of the most influential artists of the 20th century.
People
Brennox + last name combinations
How many people share a full name with Brennox as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with B
Other first names starting with B with a similar number of bearers.
FAQ
Brennox: questions and answers
How many people in the U.S. are named Brennox?
Name Census puts the figure at roughly 5 living Americans. We arrive at this by taking every SSA birth registration for Brennox going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 68,550,868 US residents.
Is Brennox a common name?
We classify Brennox as "Very Rare". It ranks above 18.2% of all first names in the SSA dataset by living bearers. Across the full history of the data, 5 babies have been registered with this name.
When was Brennox most popular?
The single biggest year for Brennox was 2018, when 5 babies received the name. The fact that the average living Brennox is about 8 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Brennox in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Brennox a male name?
Yes, 100.0% of people registered as Brennox in the SSA data are male. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Brennox still being used today?
Yes. The SSA still recorded Brennox in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Brennox can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
Does every first name have Census demographic data?
No. The public Census first-name release only covers names that met the Bureau's publication rules, so many rarer names in the SSA files do not have a published Census demographic snapshot. In those cases, the page still shows the SSA trend, gender history, and state data.
How many Americans are named Brennox?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.