Llewellyn
surname · Latin script
Meaning: From the Old Welsh personal name Llywelin, probably from Uyw meaning “leader”
Recorded as a male name· opposite-gender records fall within measured source noise
Llewellyn is a surname written in the Latin script, with more bearers in the United States than in any other country.
- GBUnited Kingdom≈1 in 12K(inferred from the name graph)
- AUAustralia≈1 in 20K
- CACanada≈1 in 40K
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
- 368 (measured from records)
- 1 in 2.3K (inferred from the name graph)
5,955 people, 2010
Highest-authority source
St. Vincent & Grenadines
measured from records inferred from the name graph
Meaning & origin(measured from records)
From the Old Welsh personal name Llywelin, probably from Uyw meaning “leader”.
Sources 1
- Encyclopedia of surnames [the complete companion to tracing your names history]
Attested across 2 languages in the etymology graph.
Where in the world(measured from records)
Llewellyn 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 | — | 5,955 | 1 in 56K | 6K | Llewellyn | 368 |
| GB United Kingdom | #947 | ≈5,500 est. | ≈1 in 12K | listed | Llewellyn | 234 |
| AU Australia | — | ≈1,300 est. | ≈1 in 20K | 3 | Llewellyn | 161 |
| ID Indonesia | — | ≈1,100 est. | ≈1 in 248K | — | Llewellyn | 16 |
| CA Canada | — | ≈940 est. | ≈1 in 40K | — | Llewellyn | 123 |
| JM Jamaica | #475 | ≈270 est. | ≈1 in 10K | — | Llewellyn | 16 |
| VC St. Vincent & Grenadines | — | 45 | 1 in 2.3K | 45 | — | — |
5,955 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; Australian national given names (aggregated state BDM); Electoral Office of St Vincent & the Grenadines — Final Voters List (Nov 2025). 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)
- William Samuel Henry Llewellynb. 1858GBBritish artist (1858-1941)
- Richard Llewellynb. 1906GBBritish novelist (1906–1983)
- Harry Llewellynb. 1911GBBritish equestrian (1911–1999)
- Roddy Llewellynb. 1947GBBritish baronet, landscape gardener, journalist
- Robert Llewellynb. 1956GBBritish writer, broadcaster, presenter, actor and renewable energy advocate
- Grant Llewellynb. 1960GBWelsh conductor
- Edward Llewellynb. 1965GBBritish political advisor
- Olivia Llewellynb. 1980GBBritish actor
- Dylan Llewellynb. 1992GBEnglish actor
- Claire 'Fluff' LlewellynGBactress
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).
Evidence(measured from records)
Attested in 48 sources across 27 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 6K | #5,807 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 5.9K | #5,679 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 5.8K | #5,544 |
| VC St. Vincent & Grenadines | Electoral Office of St Vincent & the Grenadines — Final Voters List (Nov 2025) | 2025 | 45 | #217 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 6
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia given-name tokens
- Wikidata name items (native-script + romanized given/family names)
- jeantosti.com — Dictionnaire des noms de famille de France et d'ailleurs (Jean Tosti)
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 Llewellyn mean, and where does it come from?
- From the Old Welsh personal name Llywelin, probably from Uyw meaning “leader”. Recorded by Encyclopedia of surnames [the complete companion to tracing your names history].
- In which country does Llewellyn have the most bearers?
- In the United States, the national register counted about 6.0 thousand people named Llewellyn, more than in any other country we hold, where it is most often spelled llewellyn.
- Where is Llewellyn most common?
- Measured as a share of residents rather than as a count, Llewellyn is densest in St. Vincent & Grenadines — about 1 in 2.3 thousand people — even though United States holds more of our records for it.
- What are other forms of the name Llewellyn?
- In the etymology graph, Llewelyn is a form of the same name in other languages.
- How common is the name Llewellyn?
- In the United States, the national register counted 5,955 people named Llewellyn in 2010, about 1 in 56 thousand residents.
- How common is Llewellyn compared with other names?
- In Jamaica, Llewellyn is the 475th most common surname of 50,451 surnames recorded there.
What do you want to know about Llewellyn?
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/llewellynThe 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, “Llewellyn” — the 475th most common surname in Jamaica. Data snapshot 2026-10-10.