Where did the Celts come from?

The historical Celts were a diverse group of tribal societies in Iron Age Europe. Proto-Celtic culture formed in the Early Iron Age in Central Europe (Hallstatt period, named for the site in present-day Austria). By the later Iron Age (La Tène period), Celts had expanded over a wide range of lands: as far west as Ireland and the Iberian Peninsula, as far east as Galatia (central Anatolia), and as far north as Scotland.

http://www.ancient.eu/celt/

It appears that the Celts were from the same broad area that the Germans were. They came from the Northern Indian Plain, probably pushed by the same forces that would somewhat later drive the Germans into Europe, as well. They are not related to the Greeks or Romans, really. They once controlled or occupied all of Western Europe. German invasions of Europe ran up against the Celts, and although the Germans certainly were able to take the Eastern and Northern portions of Europe, the Celts maintained their hold on much of what is today Spain, France, Belgium, Great Britain and Ireland.

Italic peoples (apart from Etruscans) are genetically linked to Proto-Celts.

The Celtic culture was developed in Central Europe, the people originally came from the Iranian region, moved to Anatolia and reached Europe after thousands years and mixed with the Neolithic non Indo-Europeans inhabitants of Europe.

They are not and never have been one group. They are a culture. The people we call celts today never called themslves celts in antiquity. Irish genomes are beginning to look like they came from Steppe peoples based on genes found in 4000 year old remains with the underlying strata being farmers from the Med coast.

There are three main tribes of Northern European: The Celts, The Germanics (includes the Nordics), and the Slavics. Genetic studies have shown that all Northern Europeans are descended from just 17 males and 14 females who migrated there some 50,000 years ago. And yes, they came from points further south, probably from the Greece/Turkey/Phoenicia area.

As far as historians can tell, the Celts came from what is now Switzerland, where they were known as the Beaker or Lake people. They spread out to the north, west and south, Apparently, at their height they occupied land in what is now southern Germany, Spain, France, Belgium, Wales, England, and Ireland. One branch settled in what is now Turkey (in Galatia).

The Celtic languages belong to the Indo European group, which includes Latin and Greek. They, however, have separate ethnic origins.

Around Hungary. The celts went west and the slavs went east.

The Celts ranged across northern Europe. They were conquered by the Romans and incorporated into the empire.

When we use the term today, we refer to the Irish and Scots that were largely beyond Roman influence.

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