Seanthomas
A masculine name derived from Seán and Thomas, meaning "gift from God" and "twin".
Name Census estimates that about 5 living Americans carry the first name Seanthomas. The name is used almost exclusively for boys. The average person named Seanthomas today is around 23 years old, and the year with the single highest number of Seanthomas births was 2003 (5 babies).
This page is the full Name Census profile for Seanthomas. 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 Seanthomas. It is among the rarest names in the SSA records.
People living today
5
~ 1 in 68,550,868 Americans
Peak year
2003
5 babies that year
Average age
23
years old
2003 SSA rank
#12,446
Tracked since 2003
Popularity
Seanthomas: popularity over time
Babies born per year
Decades
Seanthomas 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 Seanthomas during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
| Decade | Male | Female | Total |
|---|---|---|---|
| 2000s | 5 | 0 | 5 |
Origin
Meaning and history of Seanthomas
The given name Seanthomas is a compound name of Celtic and English origin, combining the Gaelic name Sean and the English name Thomas. Sean is derived from the old Gaelic word "sean," meaning "old" or "ancient," and was a common name among Irish and Scottish Gaels.
The name Thomas originated from the Aramaic name "Te'oma," meaning "twin." It gained popularity throughout Europe after the spread of Christianity, as it was the name of one of Jesus Christ's twelve apostles. The name Thomas has been recorded in various ancient texts, including the Bible's New Testament and early Christian writings.
One of the earliest recorded bearers of the name Seanthomas was Seanthomas Ua Conchobair, an Irish poet and historian who lived in the 14th century. He is known for his work "Annals of Connacht," a chronicle of events in the Irish province of Connacht.
In the 16th century, Seanthomas Ó Curnáin was an Irish Catholic priest and writer. He is best known for his work "Poems on the Most Blessed Sacrament," a collection of religious poetry published in 1658.
Seanthomas Gallacher was a Scottish philosopher and writer who lived in the late 18th century. He was a prominent figure in the Scottish Enlightenment and authored several works on moral philosophy and political economy.
Seanthomas Ó Cearbhalláin was an Irish language scholar and lexicographer from the 19th century. He is renowned for his contributions to the preservation and study of the Irish language, including the publication of an Irish-English dictionary in 1828.
In the 20th century, Seanthomas Ó Baoill was an Irish politician and member of the Irish Republican Army (IRA). He played a significant role in the Irish War of Independence and later served as a member of the Irish Dáil Éireann (parliament) from 1923 to 1957.
People
Seanthomas + last name combinations
How many people share a full name with Seanthomas as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with S
Other first names starting with S with a similar number of bearers.
FAQ
Seanthomas: questions and answers
How many people in the U.S. are named Seanthomas?
Name Census puts the figure at roughly 5 living Americans. We arrive at this by taking every SSA birth registration for Seanthomas 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 Seanthomas a common name?
We classify Seanthomas 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 Seanthomas most popular?
The single biggest year for Seanthomas was 2003, when 5 babies received the name. The fact that the average living Seanthomas is about 23 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 Seanthomas in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Seanthomas a male name?
Yes, 100.0% of people registered as Seanthomas 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 Seanthomas still being used today?
Yes. The SSA still recorded Seanthomas 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 Seanthomas 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 Seanthomas?
See how many people share the name Seanthomas on HowManyOfMe.org, our sister site built around that single question.