Blois

loc · Latin script

Meaning: from Blay, Calvados, or Blois, Loir-et-Cher; first attested Tedbalde de Blais 1116 ASC E

Recorded for both men and women· direction only, no split published

Blois is a name written in the Latin script, most frequently recorded in Portugal.

rarermore common
  • PTPortugal
  • FRFrance
  • BRBrazil

Where the name is found, darker where our sources hold more of it. No national register counts its bearers anywhere we hold data, so the map carries no figures. One hue, darker where it is more common; hover a country for its figure.

Portugal (inferred from the name graph)

no count published

Sources
65 (measured from records)

Highest-authority source

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

from Blay, Calvados, or Blois, Loir-et-Cher; first attested Tedbalde de Blais 1116 ASC E

Sources 1

  • A Dictionary of English Surnames

Where in the world(measured from records)

Blois counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Where Blois is recorded, by country
CountryMost common spellingSources
PT Portugal——Blois3
FR France—119Blois1
BR Brazil—638Blois65
US United States—284—24
AR Argentina—274—37
UY Uruguay—80—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: IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); Census Bureau — Surname Frequency 2020; RENAPER — Apellidos (person counts, national); INSEE — Fichier des noms de famille (1891–2000); 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 names spelled this way(inferred from the name graph)

Blois is also recorded as another name, grouped separately because the records behind them do not connect to the one described above.

  • a separate name2 spellings in the group

    Also written Blóis

48 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Other recorded senses(measured from records)

Blois is also recorded in 2 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In French, Blois (a city and commune, the prefecture of Loir-et-Cher department, Centre-Val de Loire, France)

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • In English, Tedbalde de Blais 1116, Stephen de Blais 1135 ASC E; Robert de Bloy 1205 Cur (Ess); Robert de Bleys 1219 Cur (Lei); John Blosse 1327 SRSf; John Bloyce or Blowes 1497 Bardsley (Nf). From Blay (Calvados), or Blois (Loir-et-Cher).

    as a nameA Dictionary of English Surnames

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)

16001700180019002000Abraham de Blois, b. 1679Louis Blois, b. 1880Jean-Marie Blois, b. 1881Frederick Murray Blois, b. 1893Flavia Blois, b. 1914Pierre Blois, b. 1927Jill Blois, b. 1950Dominique Blois, b. 1959Hélène de Blois, b. 1969Kody Blois, b. 1991

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 15 sources across 9 countries.

Official registers attesting Blois
CountryRegisterYearCountRank
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—638#13,667
US United StatesCensus Bureau — Surname Frequency 20202020284#73,555
US United StatesCensus Bureau — Surname Frequency 20002000275#67,113
AR ArgentinaRENAPER — Apellidos (person counts, national)—274—
US United StatesCensus Bureau — Surname Frequency 20102010230#82,044
FR FranceINSEE — Fichier des noms de famille (1891–2000)1951197—
FR FranceINSEE — Fichier des noms de famille (1891–2000)1961173—
FR FranceINSEE — Fichier des noms de famille (1891–2000)1921163—
FR FranceINSEE — Fichier des noms de famille (1891–2000)1931162—
FR FranceINSEE — Fichier des noms de famille (1891–2000)1941161—
FR FranceINSEE — Fichier des noms de famille (1891–2000)1971145—
FR FranceINSEE — Fichier des noms de famille (1891–2000)1981137—

Reference works 3

  • Wikipedia surname 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 Blois mean, and where does it come from?
from Blay, Calvados, or Blois, Loir-et-Cher; first attested Tedbalde de Blais 1116 ASC E Recorded by A Dictionary of English Surnames.
In which country does Blois have the most bearers?
Blois is most frequently recorded in Portugal, where it is most often spelled blois.

What do you want to know about Blois?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/blois

The 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, “Blois”. Data snapshot 2026-10-10.

See how Blois parses inside a full name →