Segodūnum is an old Celtic place name derived from

Proto-Celtic Proto-Celtic, or Common Celtic, is the ancestral proto-language of all known Celtic languages, and a descendant of Proto-Indo-European. It is not attested in writing but has been partly reconstructed through the comparative method. Proto-Celt ...

*'' sego''-'' dūno''-, meaning "strong fortress".The Place-Names of Roman Britain, pp. 452-3. A.L.F. Rivet & Colin Smith (1979). Princeton University Press. It can refer to the following locations: *

Rodez Rodez ( or ; oc, Rodés, ) is a small city and commune in the South of France, about 150 km northeast of Toulouse. It is the prefecture of the department of Aveyron, region of Occitania (formerly Midi-Pyrénées). Rodez is the seat o ...

Aveyron Aveyron (; oc, Avairon; ) is a department in the region of Occitania, Southern France. It was named after the river Aveyron. Its inhabitants are known as ''Aveyronnais'' (masculine) or ''Aveyronnaises'' (feminine) in French. The inhabitants of ...

, former town of the

Ruteni The Ruteni were a Gallic tribe dwelling in the southern part of the Massif Central, around present-day Rodez, during the Iron Age and the Roman period. Name They are mentioned as ''Rutenos'' by Caesar (mid-1st c. BC), ''R̔outēnoì'' (Ῥο ...

Aquitania Gallia Aquitania ( , ), also known as Aquitaine or Aquitaine Gaul, was a province of the Roman Empire. It lies in present-day southwest France, where it gives its name to the modern region of Aquitaine. It was bordered by the provinces of Galli ...

Segedunum Segedunum was a Roman fort at modern-day Wallsend, North Tyneside in North East England. The fort lay at the eastern end of Hadrian's Wall (in Wallsend) near the banks of the River Tyne, forming the easternmost portion of the wall. It was in u ...

Wallsend Wallsend is a town in North Tyneside, England, at the eastern end of Hadrian's Wall. It has a population of 43,842 and lies east of Newcastle upon Tyne. History Roman Wallsend In Roman times, this was the site of the fort of Segedunum. This ...

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe ...

. * Suin, Saône-et-Loire *Syon

Haute-Savoie Haute-Savoie (; Arpitan: ''Savouè d'Amont'' or ''Hiôta-Savouè''; en, Upper Savoy) or '; it, Alta Savoia. is a department in the Auvergne-Rhône-Alpes region of Southeastern France, bordering both Switzerland and Italy. Its prefecture is ...

Würzburg Würzburg (; Main-Franconian: ) is a city in the region of Franconia in the north of the German state of Bavaria. Würzburg is the administrative seat of the '' Regierungsbezirk'' Lower Franconia. It spans the banks of the Main River. Würzbur ...

Bavaria Bavaria ( ; ), officially the Free State of Bavaria (german: Freistaat Bayern, link=no ), is a state in the south-east of Germany. With an area of , Bavaria is the largest German state by land area, comprising roughly a fifth of the total l ...

It may have Germanic counterparts in Swedish ''

Fornsigtuna Signhildsberg (historically Fornsigtuna, where ''forn'' means ''ancient'', Old Sigtuna, ''Sithun'', ''Signesberg'') is a manor that formerly was a royal estate (Uppsala öd), located in the parish of Håtuna approximately west of the modern tow ...

'' and ''

Sigtuna Sigtuna () is a locality situated in Sigtuna Municipality, Stockholm County, Sweden with 8,444 inhabitants in 2010. It is the namesake of the municipality even though the seat is in Märsta. Sigtuna is for historical reasons often still ref ...

'', from

Proto-Germanic Proto-Germanic (abbreviated PGmc; also called Common Germanic) is the reconstructed proto-language of the Germanic branch of the Indo-European languages. Proto-Germanic eventually developed from pre-Proto-Germanic into three Germanic bran ...

*'' siga- tūna''-,

Old Norse Old Norse, Old Nordic, or Old Scandinavian, is a stage of development of North Germanic languages, North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants of Scandinavia and t ...

''Sigtún''.Koch, John T. (2020)
CELTO-GERMANIC Later Prehistory and Post-Proto-Indo-European vocabulary in the North and West
p. 131Entry ''Sigtuna'' in Svenskt ortnamnslexikon. Ed. Mats Wahlberg. Institutet för språk och folkminnen, Uppsala 2003.

References

{{reflist Celts Populated places in pre-Roman Gaul