Therrin
An uncommon masculine name of uncertain meaning or origin.
Name Census estimates that about 5 living Americans carry the first name Therrin. The name is used almost exclusively for boys. The average person named Therrin today is around 34 years old, and the year with the single highest number of Therrin births was 1991 (5 babies).
This page is the full Name Census profile for Therrin. 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 Therrin. It is among the rarest names in the SSA records.
People living today
5
~ 1 in 68,550,868 Americans
Peak year
1991
5 babies that year
Average age
34
years old
1991 SSA rank
#9,501
Tracked since 1991
Popularity
Therrin: popularity over time
Babies born per year
Decades
Therrin 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 Therrin during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
| Decade | Male | Female | Total |
|---|---|---|---|
| 1990s | 5 | 0 | 5 |
Origin
Meaning and history of Therrin
The name Therrin has its origins in the ancient Celtic language, which was spoken by various tribes throughout Western and Central Europe during the Iron Age, from around the 8th century BC to the 1st century AD. The name is believed to be derived from the Proto-Celtic root word "terr," which means "earth" or "land."
In the early medieval period, variations of the name, such as "Therren" and "Therrin," were commonly used among the Celtic populations living in what is now modern-day France and Britain. The name appears in several ancient Celtic texts and inscriptions, although its exact meaning and significance are not entirely clear.
One of the earliest recorded instances of the name Therrin can be found in the Annales Cambriae, a medieval chronicle recording events in Wales and the surrounding regions. The chronicle mentions a figure named Therrin ap Cadfan, who lived in the 6th century AD and was a descendant of the royal lineage of the Welsh kingdom of Gwynedd.
Throughout history, there have been several notable individuals who bore the name Therrin. One such figure was Therrin of Dol, a Breton bishop who lived in the 6th century AD and was instrumental in the evangelization of the region now known as Brittany in northwestern France.
Another prominent Therrin was Therrin the Red, a Viking chieftain and warrior who lived in the 9th century AD and is mentioned in the Icelandic sagas. He was known for his fiery red hair and his fierce reputation as a skilled fighter and leader of his clan.
In the 12th century, there was a French nobleman named Therrin de Montfort, who participated in the Third Crusade and fought alongside King Richard I of England in the Holy Land.
During the Renaissance period, Therrin Boccaccio was an Italian scholar and humanist who lived in the 15th century and was known for his translations of ancient Greek and Roman texts.
In more recent times, Therrin Frisch was a German mathematician and computer scientist who lived in the 20th century and made significant contributions to the field of formal language theory and automata theory.
While the name Therrin is not as common today as it once was, it has a rich history and has been borne by individuals from various cultures and time periods, each leaving their mark on the world in their own unique way.
People
Therrin + last name combinations
How many people share a full name with Therrin as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with T
Other first names starting with T with a similar number of bearers.
FAQ
Therrin: questions and answers
How many people in the U.S. are named Therrin?
Name Census puts the figure at roughly 5 living Americans. We arrive at this by taking every SSA birth registration for Therrin 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 Therrin a common name?
We classify Therrin 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 Therrin most popular?
The single biggest year for Therrin was 1991, when 5 babies received the name. The fact that the average living Therrin is about 34 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 Therrin in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Therrin a male name?
Yes, 100.0% of people registered as Therrin 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 Therrin still being used today?
Yes. The SSA still recorded Therrin 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 Therrin 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 people are called Therrin?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.