
1) Historical Celtic people
Found on
https://www.crosswordclues.com/clue/helvetii

The Helvetii were a Gallic tribe or tribal confederation occupying most of the Swiss plateau at the time of their contact with the Roman Republic in the 1st century BC. According to Julius Caesar, the Helvetians were divided into four subgroups or pagi. Of these Caesar only names the Verbigeni and the Tigurini, while Poseidonios mentions the Tigur...
Found on
http://en.wikipedia.org/wiki/Helvetii

a Celtic people who, under pressure from Germanic peoples in the 2nd century , migrated from southern Germany into what is now northern Switzerland. ... [5 related articles]
Found on
http://www.britannica.com/eb/a-z/h/35

The Helvetii were a Celtic people living in the area now called Switzerland (Helvetia after them) around Roman times. They were persecuted by the Romans under Vitellius for refusing to acknowledge him as Emperor and were almost wiped out by Julius Caesar in 58 BC near Geneva.
Found on
http://www.probertencyclopaedia.com/browse/CXH.HTM

a Celtic people who lived in current-day Switzerland; in 107 BCE, they attacked the consul Lucius Cassius and his army, defeating them ruthlessly; in 58 BCE, they fought again Julius Caesar's army while attempting to cross into central Gaul and, in the 9-hour Battle of Bibracte, suffered the loss of approximately 65 % of their total population; aft...
Found on
https://www.encyclo.co.uk/local/10135
No exact match found.