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Tomassetti

Tomassetti. Attested in United States of America, France, Spain, Italy, Belgium, Denmark, borne by about 788 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.

TomasettiThomassetti

What Wiktionary says this name is

Copied from the surname template on Wiktionary, not worked out here, and not from its etymology prose. Anyone may edit it; the page and the revision it was read at are linked below.

  • Italian what the English entry says it is from
  • given names what the Italian entry says it is from
  • English · Italian recorded as a surname in these languages

    A language here is the language of the NAME, not a country a family came from — the same caveat the Wikidata section carries, and worth repeating rather than assumed read.

Tomassetti on Wiktionary ↗ — read at revision 87825440. Text from Wiktionary, by its contributors, under CC BY-SA 4.0.

Where it came from

No place of this name is in the gazetteer, so this map says nothing about where the name came from. Search a surname anywhere else and you will be told an origin — that it is Latin, or Italian, or means «joyful». That is etymology, it is usually unsourced, and it is a different question from the one answered here.

Where it is borne, and where a record names it

Attested in 6 countries: United States of America, France, Spain, Italy, Belgium, DenmarkDenmark — attested, not countedBelgium — 11 peopleItaly — 52 peopleSpain — 61 peopleFrance — 87 peopleUnited States of America — 577 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 6 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.
Belgium, by commune. 11 people in 2 of Belgium's 565 communes, counted by Statbel. The biggest is Maasmechelen with 6. This is the only country here that can be drawn this way — every other register counts a country and stops, so a blank elsewhere is a gap in what states publish, not in the name.
2 places drawn, the largest being Maasmechelen, EigenbrakelEigenbrakel — 5Maasmechelen — 6

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

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

Whose archive to write to

74,904 of 528,875 volumes held for United States of America overlap the 1910s — the decades Tomassetti is attested here. Too many to list, and this atlas does not know whether any one of them names Tomassetti. The commonest kinds: Probate, land and notarial, Civil registration and vital records, Immigration and emigration, Censuses and population lists. See everything this atlas holds for United States of America →

France

87 Borne — a state counted them — Fichier des noms de famille 1891–2000 (INSEE, fichier national).

Whose archive to write to

This atlas has no birth-year evidence for Tomassetti in France, so it cannot narrow France's 1,513 volumes by date — see France's own page for all of it.

Spain

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

Whose archive to write to

This atlas has no birth-year evidence for Tomassetti in Spain, so it cannot narrow Spain's 35,936 volumes by date — see Spain's own page for all of it.

Italy

52 Borne — a state counted them — Italian comuni publishing their residents' surnames as open data, indexed by the national catalogue dati.gov.it..

Whose archive to write to

This atlas has no birth-year evidence for Tomassetti in Italy, so it cannot narrow Italy's 1,288,913 volumes by date — see Italy's own page for all of it.

Belgium

11 Borne — a state counted them — Family names by municipality, 1 January 2026 (Statbel, TA_POP_LST_2026).

Whose archive to write to

This atlas has no birth-year evidence for Tomassetti in Belgium, so it cannot narrow Belgium's 24,426 volumes by date — see Belgium's own page for all of it.

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 Tomassetti in Denmark, so it cannot narrow Denmark's 4,099 volumes by date — see Denmark's own page for all of it.

When it was being born, in France

INSEE counts births by surname and decade from the état civil, 1891 to 2000 — the only dated evidence in this dataset. A name that starts at zero and climbs arrived; a name that falls to nothing left, died out, or emigrated, and the decade it stops is the decade to stop searching. It counts births registered in France, so a family that emigrated in 1900 simply stops appearing, which is information rather than a defect. This name's first French births fall in 1901–1910 and its last in 1991–2000.

  • 1891–1900 —
  • 1901–1910 3
  • 1911–1920 5
  • 1921–1930 4
  • 1931–1940 4
  • 1941–1950 4
  • 1951–1960 12
  • 1961–1970 16
  • 1971–1980 8
  • 1981–1990 18
  • 1991–2000 13

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.

  • Carnia, Friuli 6 eras Patriarchate of Aquileia → Republic of Venice → Austria → Napoleonic Kingdom of Italy → …
  • Campania — Caserta and Naples 5 eras Kingdom of Naples → Napoleonic Kingdom of Naples → Kingdom of the Two Sicilies → Kingdom of Italy → …
  • Eastern Sicily — Catania 4 eras Kingdom of Sicily → Kingdom of the Two Sicilies → Kingdom of Italy → Italy
  • Calabria 4 eras Kingdom of Naples → Napoleonic Kingdom of Naples → Kingdom of the Two Sicilies → Italy
  • Carniola and the Slovene lands 8 eras Inner Austria → Austria → The Illyrian Provinces → Kingdom of Serbs, Croats and Slovenes, then Yugoslavia → …
  • 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 Tomassetti on the map →

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