Coriosolites
The Coriosolites or Curiosolitae were a Gallic people dwelling on the northern coast of present-day Brittany during the Iron Age and the Roman period. Name. They are mentioned as "Coriosolitas" ( "coriosolitos", "curiosolitas", "curiosolitas") and "Coriosolites" ( "coriosultes", "coricoriosuelites", "cariosu"-) by Caesar (mid-1st c. BC), and as "Coriosvelites" by Pliny (1st c. AD). The etymology of the ethnonym "Coriosolites" remains uncertain. The first element is certainly the Gaulish root "corio-" ('army, troop'), derived from Proto-Indo-European *"kóryos" ('army, people under arms'). However, the meaning of the second element is unclear. Pierre-Yves Lambert has proposed to interpret "corio-solit -es" as 'those who purchase (or sell) mercenaries', by positing a Gaulish root "solitu-" ('purchase/salary of mercenaries'; cf. Gaul. "soldurio-" < 'body-guard, loyal, devoted', OBret. "solt" 'solidus'). Alternatively, a connection with the Gaulish root "sūli-" ('[good] sight'; cf. OIr. "súil", 'sight', Britt. "Sulis") has also been conjectured, with "corio-soli-tes" as the 'troop-watchers', 'those who watch over the troop'. The city of Corseul, attested ca. 400 AD as "civitas Coriosolitum" ('civitas of the Curiosolites', "Aecclesia Corsult" ca. 869, "Corsout" in 1288) is named after the Gallic tribe. Geography. Territory. They are mentioned by Caesar with the  Veneti, Unelli, Osismi, and others that Caesar calls "maritimae civitates", "maritime cities", and border on the Atlantic Ocean. In another place he describes the position of the Curiosolitas on the ocean in the same terms, and includes them among the Armoric states, a name equivalent to "maritimae". Pliny mentions them with the Unelli, Diablindi, and Rhedones. Settlements. The ancient settlement of Corseul was most likely established "ex nihilo" by the Roman authorities during the reign of Augustus, as the capital of the "civitas" Coriosolitum. The town is generally identified with the settlement of "Fanum Martis" ('temple of Mars') mentioned on  the "Tabula Peutingeriana" (5th c. AD). Due to the lack of early epigraphic record, however, the original Gaulish name of the town remains unknown. Corseul reached at size of 47ha in the first centuries of the Common Era. Around 340 AD, the capital of the "civitas" was moved to Aleth (Saint-Servan), situated on the coast.