Castelnuovo
loc · Latin script
Meaning: variante de Castelnovo; habitante de localidades homônimas
Recorded for both men and women· direction only, no split published
Castelnuovo is a name written in the Latin script, with more bearers in Italy than in any other country.
- ITItaly≈1 in 60K(inferred from the name graph)
- UYUruguay1 in 100K
- CHSwitzerland1 in 138K
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.
- Italy (inferred from the name graph)
- Sources
- 46 (measured from records)
- ≈1 in 60K (inferred from the name graph)
≈1,000 people, est.
Highest-authority source
Italy, est.
measured from records inferred from the name graph
Spellings & scripts(measured from records)
One other spelling is counted as the same name:
Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.
Meaning & origin(measured from records)
variante de Castelnovo; habitante de localidades homônimas
Sources 1
- Dicionário dos sobrenomes italianos
Attested across 4 languages in the etymology graph.
Where in the world(measured from records)
Castelnuovo 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 | |||
|---|---|---|---|---|---|
| IT Italy | ≈1,000 est. | ≈1 in 60K | — | Castelnuovo | 23 |
| AR Argentina | 309 | 1 in 147K | 309 | — | 45 |
| CH Switzerland | 61 | 1 in 138K | 61 | — | 5 |
| US United States | ≈59 est. | ≈1 in 5.7M | listed | Castelnuovo | 46 |
| UY Uruguay | 34 | 1 in 100K | 34 | — | 2 |
| ES Spain | 16 | 1 in 3.1M | 16 | — | 8 |
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: RENAPER — Apellidos (person counts, national); BFS — Familiennamen der Wohnbevölkerung (surnames); INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public); INE — Padrón per-token widgets (current living counts, given + apellidos); the us-wru-surnames-voterfile register. 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)
- Enrico Castelnuovob. 1839FRItalian writer (1839-1915)
- Guido Castelnuovob. 1865ITItalian mathematician (1865–1952)
- Elías Castelnuovob. 1893UYArgentinian writer and journalist (1893–1982)
- Mario Castelnuovo-Tedescob. 1895USItalian composer (1895–1968)
- Emma Castelnuovob. 1913ITItalian teacher (1913-2014)
- Vittorio Castelnuovob. 1915CHSwiss singer-songwriter (1915-2005)
- Enrico Castelnuovob. 1929ITItalian art historian (1929-2014)
- Nino Castelnuovob. 1936ITItalian actor (1936-2021)
- Mario Castelnuovob. 1955ITItalian singer-songwriter
- Luisa Moscati CastelnuovoItalian historian of antiquity
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 14 sources across 9 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| AR Argentina | RENAPER — Apellidos (person counts, national) | — | 309 | — |
| CH Switzerland | BFS — Familiennamen der Wohnbevölkerung (surnames) | 2024 | 61 | #16,013 |
| UY Uruguay | INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public) | — | 34 | — |
| ES Spain | INE — Padrón per-token widgets (current living counts, given + apellidos) | — | 16 | #94,489 |
| US United States | wru Name Dictionary — US surnames, voter-file supplement (Khanna et al.) | — | — | — |
Reference works 4
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia surname tokens
- Wikidata name items (native-script + romanized given/family names)
- Cognomix.it (Nomix s.r.l.) — Italian surname origin dictionary
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 Castelnuovo mean?
- Recorded meaning: variante de Castelnovo; habitante de localidades homônimas
- In which country does Castelnuovo have the most bearers?
- Mondonomo estimates about 1.0 thousand people named Castelnuovo in Italy, more than in any other country we hold, where it is most often spelled castelnuovo.
- How common is the name Castelnuovo?
- In Argentina, the national register counted 309 people named Castelnuovo, about 1 in 147 thousand residents.
What do you want to know about Castelnuovo?
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/castelnuovoThe 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, “Castelnuovo”. Data snapshot 2026-10-10.