Hennesy
surname · Latin script
Recorded for both men and women· direction only, no split published
/hɛnnzi/(machine-generated) pronunciation, model-generated
Hennesy is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: Main GB Location (1881): London; Lancs;. from Ó hAonghusa, see Hennessy .
- USUnited States1 in 751K(measured from records)
- IEIreland≈1 in 109K
- ATAustria≈1 in 346K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Sources
- 158 (measured from records)
- ≈1 in 109K (inferred from the name graph)
443 people, 2010
Highest-authority source
Ireland, est.
measured from records inferred from the name graph
Meaning & origin(measured from records)
Main GB Location (1881): London; Lancs;. from Ó hAonghusa, see Hennessy .
Sources 2
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
Where in the world(measured from records)
Hennesy 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 | 443 | 1 in 751K | 446 | Hennesy | 158 |
| GB United Kingdom | ≈65 est. | ≈1 in 1M | — | Hennesy | 41 |
| IE Ireland | ≈47 est. | ≈1 in 109K | — | Hennesy | 11 |
| CA Canada | ≈42 est. | ≈1 in 905K | — | Hennesy | 10 |
| AT Austria | ≈26 est. | ≈1 in 346K | — | Hennesy | 3 |
| SG Singapore | ≈13 est. | ≈1 in 485K | — | Hennesy | 1 |
443 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. 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).
Notable people with this name(measured from records)
- Hugh Hennesyb. 1891USAmerican layout artist (1891-1954)
- Tom Hennesyb. 1923USactor, Stuntman (1923-2011)
- Dale Hennesyb. 1926USAmerican production designer and art director (1926–1981)
- Carolyn Hennesyb. 1962USAmerican actress
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)
Attested in 12 sources across 3 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 446 | #50,632 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 443 | #47,791 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 416 | #47,838 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 4
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
- Wikipedia surname tokens
- Wikidata name items (native-script + romanized given/family names)
These works list the name; their figures are licensed and are not reproduced here.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Hennesy mean, and where does it come from?
- Main GB Location (1881): London; Lancs;. from Ó hAonghusa, see Hennessy . Recorded by Dictionary of American Family Names and The Oxford Dictionary of Family Names in Britain and Ireland.
- How do you pronounce Hennesy?
- A machine transcription gives /hɛnnzi/ (IPA) for English.
- In which country does Hennesy have the most bearers?
- In the United States, the national register counted about 443 people named Hennesy, more than in any other country we hold, where it is most often spelled hennesy.
- How common is the name Hennesy?
- In the United States, the national register counted 443 people named Hennesy in 2010, about 1 in 751 thousand residents.
What do you want to know about Hennesy?
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/hennesyThe 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, “Hennesy”. Data snapshot 2026-10-10.