Seamus
Masculine · “the Irish form of James”
Seamus is the Irish form of James, and behind it stands one of the longest continuous chains in European naming — Hebrew Ya'aqov, Greek and Latin Jacobus, then a thousand years of local reshaping. Irish speakers made it Séamus; Scottish Gaelic made it Seumas, from which English took Hamish. It arrives in the mouth as two easy beats, SHAY-mus, with the soft sh that Irish gives to an s before e.
How old is the name Seamus?
Seamus first appears in US birth records in 1957 — 68 years ago. The typical Seamus alive today was born around 2007, making them about 18 years old. About 7,600 people named Seamus are estimated to be alive in the US today.
When was the name Seamus most popular?
Seamus peaked in 2003, reaching #734 nationally. Today it ranks #1276, 542 places below that high. See the whole 2003 chart.
Seamus appears on these lists:
Where it comes from
From Ya'aqov to Seamus
The story of Seamus
Ireland received the name Jacobus with the Church and with the Anglo-Norman arrival in the twelfth century, and Irish speakers reshaped it as Séamus, with the stress on the first syllable and the opening s softened to sh. The same Latin name became Seumas in Scottish Gaelic, and the vocative form of that — Sheumais, used when addressing someone — is where English Hamish comes from, so Seamus and Hamish are the same name twice over. Irish emigration carried Séamus to America, usually with the accent dropped in print, and its footing in the United States is strongest in the northeastern states where Irish families settled thickest. It has been in American records for several generations now, moving in a narrow, level band rather than in waves.
Meaningscholars disagree
the Irish form of James, from Hebrew Ya'aqov (Jacob)
Two serious readings compete for the Hebrew name Ya'aqov. One connects it to 'aqev, 'heel', hence the traditional gloss 'holder of the heel' or 'supplanter', drawn from the birth narrative in Genesis. The other treats it as a shortened sentence-name meaning something like 'may God protect'. What is not in doubt is the route: Ya'aqov to Greek Iakobos, to Latin Iacobus, to the medieval Iacomus that gave both James and Séamus.
How the name formed
- Ya'aqov
- Iakobos
- Iacobus
- Iacomus
- Séamus
Related forms: Séamus · Seumas · James · Hamish · Jacques · Jaime
Pronouncing Seamus
SHAY-mus
Stress on the first syllable. The initial s is pronounced sh, an ordinary rule in Irish before e and i — this is the point most English readers need told once. The written accent, Séamus, marks the long a and is usually dropped in American spelling.
Nicknames for Seamus
High
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1957
- Most boys named
- 2008298 — the highest on record
- Peak rank
- #734reached in 2003
- Change vs 2024
- +23.2%154 in 2025, from 125
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Seamus in other languages
The same name elsewhere
- Séamus in Irish — spelling variant
- Seumas in Scottish Gaelic — same name
- James in English — same name
- Hamish in Scottish English — related form
- Jacques in French — same name
- Jaime in Spanish — same name
Strongest US states over the last decade: Massachusetts, New York, Pennsylvania.
Seamuss among us
people named Seamus are estimated to be alive in the US today
About 1 boy in 11,091 born in 2025 was named Seamus
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
What happens to a name after it peaks
The Andreas test
Every popular name lives one long story — a climb, a peak, a slow settling back. Seamus's later chapters haven't been written yet, so we borrowed them: Andreas climbed just as high around 1966, and its whole arc is on record. Line the two peaks up, and Andreas's path sketches the road Seamus is walking now.
Seamus sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Where Seamus is headed
Seamus should hold steady through 2030 — the curve is flat, and flat curves are the most predictable kind.
High confidence — fitted on official counts through 2025.
A damped-trend projection of the official birth data — a sketch of momentum, not a promise. Every name's forecast, ranked.
Seamus beside its neighbors
The names ranked closest to Seamus in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- Sits at the end of an unbroken line from Ya'aqov through Latin Iacobus, one of the most documented naming chains there is.
- Has ready-made short forms already in real use: Seamie, Shay, Séimí.
- Travels as itself — James, Jacques, Jaime, Seumas and Hamish are all the same name in other languages.
- One dominant spelling in American use, with the accented Séamus as the recognized Irish original rather than a competing variant.
- The sh sound is not predictable from the spelling for most English speakers, so expect 'SEE-mus' from teachers, receptionists and new colleagues, and a lifetime of correcting it once per introduction.
- It reads as unmistakably Irish. That is a plus for many families and simply a fact to weigh for others, since the name announces an origin before anything else about the child is known.
- Rare enough in American classrooms that the name will usually be explained rather than recognized — no confusion with a second Seamus, but also no head start on pronunciation.
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What they receive
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Seamus
Masculine · #1276 in the U.S.
Frequently asked
- How many Seamuss are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 7,600 people named Seamus are estimated to be alive in the US today.
- How popular is the name Seamus in 2025?
- Seamus ranks #1276 among US boy names in 2025, with 154 babies given the name.
- How rare is the name Seamus?
- About 1 in every 11,091 US boys born in 2025 was named Seamus — 154 in all.
- Will my child share the name Seamus with classmates?
- Seamus will almost certainly be the only one in school.
Ranked beside Seamus
Names sitting at a similar level of popularity right now.
Krish#1276 · Andreas#1276 · Percy#1276 · Octavio#1276 · Jadon#1281 · Kolten#1281 · Reginald#1281 · Aryeh#1281
Looking for what else is popular rather than what resembles Seamus? See the current top 100.
Choosing between Seamus and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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