Cahir
surname · Latin script
Meaning: ‘warrior’. Once popular in Leinster; Cathair was a variant in several families (Irish first names)
(measured from records)Officially recorded in 6 countries · latest register: Census Bureau, 2020
Cahir is a surname written in the Latin script, with more bearers in the United States than in any other country: 127 people, counted by the Census Bureau in 2010.
- USUnited States1 in 2.6M(measured from records)
carrying the name, as counted by each country's national register. Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Record sources
- 33 (measured from records)
- 1 in 2.6M (inferred from the name graph)
127 people, 2010
corpus datasets behind its best-documented spelling
strongest: highest-authority source
United States
measured from records inferred from the name graph
Meaning & origin
(measured from records)‘warrior’. Once popular in Leinster; Cathair was a variant in several families. Still used in Ireland.
Cited for this meaning 1
- Irish first names
Where the surname Cahir is found
(measured from records)Cahir counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.
| Country | Most common spelling | Sources | |||
|---|---|---|---|---|---|
| US United States | 127 | 1 in 2.6M | 138 | Cahir | 7 |
| FR France | — | — | 1 | Cahir | 33 |
| GB United Kingdom | — | — | 25 | Cahir | 5 |
| CA Canada | — | — | 1 | — | 1 |
| IS Iceland | — | — | 1 | — | — |
127 people counted by Census Bureau — Surname Frequency 2010, 2010. Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.
Registers cited: Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2020; INSEE — Fichier des noms de famille (1891–2000); NISRA — Baby names Northern Ireland full list (1997–present); Alberta Open Government — Frequency and Ranking of Baby Names by Year and Gender; Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry). Figures without a register are Mondonomo estimates; see Methodology.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).
Other recorded senses
(measured from records)Cahir is also recorded in 2 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
Irish: Anglicized spelling of CATHAOIR .
as a word
In Portuguese, Pre-reform spelling (used until 1943 in Brazil and 1911 in Portugal) of cair.
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name
(measured from records)- Thomas Cahirb. 1952USpolitician in Massachusetts, US
- Gerard Cahirb. 1959Australian rules footballer
- Caitriona CahirIEresearcher
The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).
How to address them
(machine-generated)Evidence
(measured from records)14 registers and reference works attest this spelling, across 6 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- Where does the name Cahir come from?
- ‘warrior’. Once popular in Leinster; Cathair was a variant in several families. Still used in Ireland. Recorded by Irish first names.
- What does the name Cahir mean?
- Recorded meaning: ‘warrior’. Once popular in Leinster; Cathair was a variant in several families.
- In which country does Cahir have the most bearers?
- In the United States, the national register counted about 127 people named Cahir, more than in any other country we hold, where it is most often spelled cahir.
- Where is Cahir most common?
- Cahir is densest in the United States, where the national register counts about 1 in 2.6 million people carrying it.
- How common is the name Cahir?
- In the United States, the national register counted 127 people named Cahir in 2010, about 1 in 2.6 million residents.
What do you want to know about Cahir?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/cahirThe payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.
About this data
measured from records inferred from the name graph machine-generated
These figures come from the data snapshot of and will change as it is rebuilt.
Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.
Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.
Cite this page Mondonomo, “Cahir” — ranked 124109th in the United States (Census Bureau). Data snapshot 2026-10-13.