Given name
Seamus
“he who supplants”
Seamus is a form of James. James is traditionally associated with “he who supplants” through its connection with Jacob. The explanation belongs to the biblical Jacob story, rather than describing a separate meaning created by the English spelling James.
Original IrishSéamas
Meaning & origin
What it means
In Irish use, Seamus carries the interpretation “he who supplants.” Seamus is a form of James. James is traditionally associated with “he who supplants” through its connection with Jacob. The explanation belongs to the biblical Jacob story, rather than describing a separate meaning created by the English spelling James.
Combines direct and name-family evidence
Where it comes from
An origin associated with this spelling is Irish.
How it developed
Seamus is used as a form of James. Seamus is a form of James. The shared background comes through James: The route to James passes through Late Latin Iacomus, a variant of the Latin form of Jacob. This different Latin development helps explain how James and Jacob could become distinct English names while retaining the same older origin.
Combines direct and name-family evidence
The story
Published U.S. birth records include this spelling as early as 1957. This is the earliest published observation available here, rather than a date for the name’s origin. Seamus is a form of James. The history of James gives this family its wider story. James was borne by two New Testament disciples: James son of Zebedee and James son of Alphaeus. James later became a recurring Scottish royal name: James VI of Scotland took the English throne in 1603. After James II lost that throne in 1688, his family’s supporters became known as Jacobites, drawing on the Latin form of James.
Combines direct and name-family evidence
Seamus through the years
- Babies since 1880
- 7,809
- 7,809 boys · 0 girls
- Most popular year
- 2008
- 298 babies
- 2025
- 154
- #1,280 for boys
- 2021–25 vs 2016–20
- −26%
- Easing
Where it’s given
By the numbers
In 2025, this name appeared in 154 U.S. birth records for boys, ranking No. 1,280 among boys’ names. Average annual use for boys was 25.7% lower in 2021–2025 than in 2016–2020. Its largest published annual count for boys was 298 in 2008. In 2025, Massachusetts had the largest reported state-level birth count for boys with this name (20). Published U.S. population figures for this spelling include 6,955 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Seamus’s family of names
In English usage, Seamus has a diminutive in Shay. In English usage, Seamus developed from James. In English usage, Seamus has a related form in Shamus.
Inner ring: spellings · middle: nicknames and forms · outer: across languages.
Nicknames & forms 8
Diminutives, pet forms, short forms and variants used alongside the name.
Spellings & scripts 1
The same name written differently, including transliterations into other scripts.
Across languages 21
Equivalents and cognates in other languages, plus older forms it grew from.
People named Seamus
- Seamus HeaneyIrish poet, playwright, translator, lecturer (1939–2013)
- Seamus DeverAmerican actorborn 1976
- Seamus Davey-FitzpatrickAmerican actorborn 1998
- Seamus McGarveyIrish cinematographerborn 1967
- Shay ElliottIrish racing cyclist (1934–1971)
- Seamus DeaneIrish writer and critic (1940-2021)
- Seamus MallonIrish politician (1936–2020)
- Seamus BlakeCanadian jazz saxophonistborn 1969
- Seamus O'ConnorIrish snowboarderborn 1997
Characters named Seamus: Seamus Finnigan (fictional character of the Harry Potter series).
Listed by how widely each person is written about, which says nothing about the name itself.
Similar names
If you love Seamus, these share its style, era, origin or sound, from outside its own family.
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Saarrah
“princess”
—
sārā
“lady, princess”
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Jeames
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>99% boys
Sorchyah
“princess”
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Sorchya
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—