Detournay
surname · Latin script
(measured from records)Officially recorded in 3 countries · latest register: Familienaam.be, 2008
Detournay is a surname written in the Latin script, with more bearers in Belgium than in any other country.
- BEBelgium1 in 15K(measured from records)
- FRFrance≈1 in 120K
- USUnited States≈1 in 30Mfew records
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.
- Belgium (measured from records)
- Record sources
- 139 (measured from records)
- 1 in 15K (inferred from the name graph)
783 people, 2008
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Belgium
measured from records inferred from the name graph
Meaning & origin
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Attested in 1 language in the etymology graph.
Where in the world
(measured from records)Detournay 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 | |||
|---|---|---|---|---|---|
| BE Belgium | 783 | 1 in 15K | 783 | Detournay | 44 |
| FR France | ≈570 est. | ≈1 in 121K | 61 | Detournay | 139 |
| US United States | ≈11 est. | ≈1 in 30M | listed | Detournay | 24 |
| ES Spain | ≈6 est. | ≈1 in 8.8M | — | Detournay | 5 |
| GB United Kingdom | ≈2 est. | ≈1 in 31M | — | Detournay | 5 |
| CA Canada | ≈2 est. | ≈1 in 20M | — | Detournay | 2 |
783 people counted by Familienaam.be — Belgian family-name frequency (population register), 2008. 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: INSEE — Fichier des noms de famille (1891–2000); Familienaam.be — Belgian family-name frequency (population register); 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)- Dorothée J. Louise Detournayb. 1838BEBelgian photographer (1838-1900)
- Béatrice Detournayb. 1940FRFrench hellenist
- Alain Detournayb. 1954FRFrench politician
- Stéphane Detournayb. 1962BEBelgium organist and musicologist
- Sylvie Detournayb. 1983BEBelgian applied mathematician
- Stéphane DetournayBEphysicist
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)6 registers and reference works attest this spelling, across 3 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 783 | #1,794 |
| BE Belgium | Statbel — Noms de famille (family names) | — | 661 | #2,187 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1981 | 72 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1921 | 67 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1951 | 65 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1941 | 65 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1991 | 61 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1961 | 51 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1971 | 50 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1931 | 40 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1891 | 35 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1901 | 34 | — |
Reference works 2
- 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
- In which country does Detournay have the most bearers?
- In Belgium, the national register counted about 783 people named Detournay, more than in any other country we hold, where it is most often spelled detournay.
- Where is Detournay most common?
- Detournay is densest in Belgium, where the national register counts about 1 in 15 thousand people carrying it.
- How common is the name Detournay?
- In Belgium, the national register counted 783 people named Detournay in 2008, about 1 in 15 thousand residents.
What do you want to know about Detournay?
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/detournayThe 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, “Detournay”. Data snapshot 2026-10-13.