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Delos

Delos. Attested in France, United States of America, Spain, Belgium, Italy, borne by about 2,032 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.

DelozDellos

Only sounds alike

An algorithm's guess. Useful for casting a net, and not evidence.

DelasDeleśDeliśDellsDelusDelysDilosDulos

It is also the name of a place

1 place drawn, the largest being DelosDelos — 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.

  • Delos United States of America

Where it is borne, and where a record names it

Attested in 5 countries: France, United States of America, Spain, Belgium, ItalyItaly — 4 peopleBelgium — 5 peopleSpain — 114 peopleUnited States of America — 269 peopleFrance — 1,640 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. Blank is not absence. This draws the 5 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. 5 people in 1 of Belgium's 565 communes, counted by Statbel. The biggest is Elsene with 5. 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.
1 place drawn, the largest being ElseneElsene — 5

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.

France

1,640 Borne — a state counted them — Fichier des noms de famille 1891–2000 (INSEE, fichier national).

Whose archive to write to

88 of 1,513 volumes held for France overlap the 1890s, 1910s, 1930s, 1950s, 1960s, 1970s, 1980s and 1990s — the decades Delos is attested here. Too many to list, and this atlas does not know whether any one of them names Delos. The commonest kinds: Civil registration and vital records, Censuses and population lists, Church and parish registers. See everything this atlas holds for France →

United States of America

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

Whose archive to write to

This atlas has no birth-year evidence for Delos in United States of America, so it cannot narrow United States of America's 528,875 volumes by date — see United States of America's own page for all of it.

Spain

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

Whose archive to write to

9,558 of 35,936 volumes held for Spain overlap the 1820s, 1830s, 1860s, 1920s and 1940s — the decades Delos is attested here. Too many to list, and this atlas does not know whether any one of them names Delos. The commonest kinds: Church and parish registers, Probate, land and notarial, Immigration and emigration, Civil registration and vital records. See everything this atlas holds for Spain →

Belgium

5 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 Delos in Belgium, so it cannot narrow Belgium's 24,426 volumes by date — see Belgium's own page for all of it.

Italy

4 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 Delos in Italy, so it cannot narrow Italy's 1,288,913 volumes by date — see Italy'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.

  • 1891–1900 80
  • 1901–1910 132
  • 1911–1920 121
  • 1921–1930 137
  • 1931–1940 123
  • 1941–1950 194
  • 1951–1960 203
  • 1961–1970 188
  • 1971–1980 171
  • 1981–1990 136
  • 1991–2000 155

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.

France
United States of America
Belgium
Italy
  • 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 → …

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

Find Delos on the map →

The surname dataset · CC0, and downloadable