Guglielmo
surname · Latin script
Meaning: a male given name, equivalent to English William
Recorded as a male name· opposite-gender records fall within measured source noise
/ɡuɡɫiˈɛɫmoʊ/(machine-generated) pronunciation, model-generated
Guglielmo is a surname written in the Latin script, with more bearers in the United States than in any other country.
- USUnited States1 in 160K(measured from records)
- CHSwitzerland1 in 99K
- ARArgentina1 in 111K
carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Sources
- 162 (measured from records)
- 1 in 99K (inferred from the name graph)
2,078 people, 2010
Highest-authority source
Switzerland
measured from records inferred from the name graph
Meaning & origin(measured from records)
a male given name, equivalent to English William
Sources 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested across 14 languages in the etymology graph.
Where in the world(measured from records)
Guglielmo 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 | 2,078 | 1 in 160K | 2.1K | Guglielmo | 129 |
| AR Argentina | 409 | 1 in 111K | 409 | — | 1 |
| BR Brazil | 200 | 1 in 1.1M | 200 | — | 1 |
| CH Switzerland | 85 | 1 in 99K | 85 | Guglielmo | 32 |
| ES Spain | 28 | 1 in 1.8M | 67 | Guglielmo | 24 |
| UY Uruguay | 25 | 1 in 136K | 25 | — | — |
| BE Belgium | 22 | 1 in 533K | 22 | Guglielmo | 11 |
2,078 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; RENAPER — Apellidos (person counts, national); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); BFS — Familiennamen der Wohnbevölkerung (surnames); INE — Padrón per-token widgets (current living counts, given + apellidos); Familienaam.be — Belgian family-name frequency (population register); INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public). 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)
Guglielmo is also recorded in 5 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Italian, Germanico, da wil «volontà» + helm «elmo, protezione».
as a nameDizionario Dei Nomi e Cognomi Italiani
In Italian, Dal germanico will = volontà e helm = elmo; per traslato, difesa, protezione.
as a nameDizionario Dei Nomi e Cognomi Italiani
In Italian, dal germ. wil ‘volontà’ + helm ‘elmo’
as a nameDizionario Dei Nomi e Cognomi Italiani
In Italian, forma italiana de Guilielmus; Guilherme
as a nameDicionário dos sobrenomes italianos
Elmo della volontà
as a nameIl grande libro dei nomi per bebè. Significato, origini, curiosità. Oltre 7000 nomi per bambine e bambini Significato,…
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)
- Pasquale Guglielmob. 1810Italian composer
- Giovanni Di Guglielmob. 1886ITItalian hematologist (1886–1962)
- Dudley A. Guglielmob. 1909USAmerican politician (1909–2005)
- Rino Guglielmob. 1910ITItalian painter (1910-1994)
- Raymond Guglielmob. 1923FRFrench geographer (1923-2011)
- Tony Guglielmob. 1940USAmerican politician
- Letterio Guglielmob. 1945ITresearcher
- Jennifer Guglielmob. 1967USAmerican historian
- Federico Guglielmob. 1968ITItalian violinist and conductor
- Thomas A. Guglielmob. 1969USAmerican historian
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 48 sources across 26 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 2.1K | #14,382 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 2K | #13,820 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 2K | #14,586 |
| AR Argentina | RENAPER — Apellidos (person counts, national) | — | 409 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 200 | #36,823 |
| CH Switzerland | BFS — Familiennamen der Wohnbevölkerung (surnames) | 2024 | 85 | #12,519 |
| ES Spain | INE — Apellidos más frecuentes (Padrón Municipal) | — | 28 | #67,599 |
| ES Spain | INE — Padrón per-token widgets (current living counts, given + apellidos) | — | 28 | #65,950 |
| UY Uruguay | INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public) | — | 25 | — |
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 22 | #44,674 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 2
- Wikipedia given-name 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 are other forms of the name Guglielmo?
- In the etymology graph, Wilmot, Wilkin and Ulick are forms of the same name in other languages.
- What does the name Guglielmo mean, and where does it come from?
- a male given name, equivalent to English William Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- How do you pronounce Guglielmo?
- A machine transcription gives /ɡuɡɫiˈɛɫmoʊ/ (IPA) for English.
- In which country does Guglielmo have the most bearers?
- In the United States, the national register counted about 2.1 thousand people named Guglielmo, more than in any other country we hold, where it is most often spelled guglielmo.
- Where is Guglielmo most common?
- Measured as a share of residents rather than as a count, Guglielmo is densest in Switzerland — about 1 in 99 thousand people — even though United States holds more of our records for it.
- How common is the name Guglielmo?
- In the United States, the national register counted 2,078 people named Guglielmo in 2010, about 1 in 160 thousand residents.
What do you want to know about Guglielmo?
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/guglielmoThe 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, “Guglielmo”. Data snapshot 2026-10-10.