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Blaž

Blaž. Attested in United States of America, Slovenia, Spain, Denmark, borne by about 459 people in the registers this map holds.

The same name, spelt two ways

One systematic substitution — s for z, w for v, ch for h — where BOTH spellings are independently attested surnames. Kosina and Kozina are one man in two clerks' handwriting. Stronger than sounding alike, weaker than somebody having checked.

BlasBlatzBłaś

What Wikidata says this name is

Copied from Wikidata, not worked out here. It is crowd-sourced and wrong in places, which is why the item is linked below rather than the claim simply repeated.

  • Slovene the language of the name

    Which is not where a family is from. A Polish surname can be borne by people whose forebears never saw Poland, and often is.

Q114451805 on Wikidata ↗ — the item every line above came from.

It is also the name of a place

3 places drawn, the largest being Blaž, Blaž, BlätzBlätz — 1Blaž — 1Blaž — 1
Where those places are. A dot is a settlement whose name is this surname, sized by its population — not a claim that anybody of the name lives there. Phonetic neighbours are listed below but not drawn: putting a machine's guess on the ground would dress it up as geography.

This is as close to an origin as this map will go. A surname that is also a place name often came from it — and often did not: plenty are occupations or patronymics that happen to collide with a place, and plenty of places are named after a family rather than the other way round. It is a fact with a source, which is more than an etymology page offers.

  • Blaž Bosnia and Herz.
  • Blaž Slovenia
  • Blätz Germany a spelling of the name

Where it is borne, and where a record names it

Attested in 4 countries: United States of America, Slovenia, Spain, DenmarkDenmark — attested, not countedSpain — 46 peopleSlovenia — 51 peopleUnited States of America — 362 people
A dot is a country, not a place. It sits at the country's centre because a national register counts a country; nothing here says where in it these people are. A hollow ring is attested but not counted — Denmark publishes which surnames exist and not how many carry each, and a family archive finds a name without counting heads. Sizing those by a number nobody published would invent it. Blank is not absence. This draws the 4 countries where the eleven registers and eight archives behind this atlas attest the name. Most of the world has no surname register this project can read, and the ones that do and will not are listed with the reason.

Country by country

Each country below can carry up to three different kinds of evidence, and none of them is the same claim. A register is a head-count — a state counted these people. A record is one document naming the surname on that ground, narrower evidence and often much older. And a volume overlapping these dates is a document from the right place and years — never a document known to name this surname. None of the three ever means the name exists in that country and nowhere else, or that it exists nowhere but here.

United States of America

362 Borne — a state counted them — Frequently Occurring Surnames from the 2010 Census; Frequently Occurring Surnames from the 2000 Census.

Whose archive to write to

100,615 of 528,875 volumes held for United States of America overlap the 1920s, 1940s, 1950s, 1960s, 1970s and 1980s — the decades Blaž is attested here. Too many to list, and this atlas does not know whether any one of them names Blaž. The commonest kinds: Probate, land and notarial, Civil registration and vital records, Immigration and emigration, Church and parish registers. See everything this atlas holds for United States of America →

Slovenia

51 Borne — a state counted them — Family names, Slovenia, 2026 (SURS tables 05X1015S–05X1018S).

Whose archive to write to

762 of 1,585 volumes held for Slovenia overlap the 1840s, 1870s, 1890s, 1920s, 1940s, 1970s and 1980s — the decades Blaž is attested here. Too many to list, and this atlas does not know whether any one of them names Blaž. The commonest kinds: Civil registration and vital records. See everything this atlas holds for Slovenia →

Spain

46 Borne — a state counted them — Frecuencia de apellidos, Censos de población (INE).

Whose archive to write to

11,774 of 35,936 volumes held for Spain overlap the 1830s, 1900s, 1910s, 1920s, 1930s, 1940s, 1950s, 1960s, 1970s, 1980s and 1990s — the decades Blaž is attested here. Too many to list, and this atlas does not know whether any one of them names Blaž. The commonest kinds: Church and parish registers, Probate, land and notarial, Civil registration and vital records, Immigration and emigration. See everything this atlas holds for Spain →

Denmark

Borne — a state counted them — Navne registreret i Danmark, January 2020 (Danmarks Statistik, republished by Digitaliseringsstyrelsen).

Whose archive to write to

This atlas has no birth-year evidence for Blaž in Denmark, so it cannot narrow Denmark's 4,099 volumes by date — see Denmark's own page for all of it.

Whose archive held that ground, and when

Every surname site can tell you a name is common somewhere. This one also knows which filing system held that ground in which years — and those are the two halves of one question: my people were called this, they were there, so who has the paper, and for which century. A name in Croatia before 1881 may sit in a military series and not a county one; a name in the Netherlands before 1811 has no civil record at all, only a baptism.

This is about the ground, not about your family. A register counting a name in a country says nothing about which village. And these are the pieces of a country this atlas has drawn, which in a large one may be a corner of it — Acadia reaches into Maine and is not a statement about the United States, and Bohemia's ground crosses into Poland. Each region's own page says which ground it covers. Where a country is missing below, nothing covers it yet.

United States of America
Slovenia
  • Central Istria 8 eras Aquileia → Habsburg → Napoleonic → Austria–Hungary → …
  • Carniola and the Slovene lands 8 eras Inner Austria → Austria → The Illyrian Provinces → Kingdom of Serbs, Croats and Slovenes, then Yugoslavia → …
Denmark
  • Denmark 4 eras Denmark–Norway → Denmark, after the loss of Norway → Prussia, then the German Empire → Denmark

No record region is drawn yet for Spain — which is a gap in this atlas and not a statement about that country.

Find Blaž on the map →

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