Okay, the article was interesting, but I have a few comments.
| they were not Celts. This was an invention of the 18th century; the name was not used earlier. |
I was under the impression that the term was used by Herodotus of Halicarnassus in the archaic form of Keltoi, during the 6th century B.C.
| language does not determine ethnicity (that would make the modern islanders 'Germans', since they mostly speak English, classified as a Germanic tongue). |
The language has evolved a great deal in the intervening centuries sense the English arrived in the isles. At the time the Germanic peoples first appeared in recorded history, they were divided into various tribal groups, all of whom were lopped together under the term "Germans" by the Romans. Thus it was with the various Celtic tribes and peoples. The modern designation of Celtic may, indeed, have originated in the eighteenth century, but the comparison is a bit off.
| Certainly, there is no reason to link the coming of 'Celtic' language with any great 'Celtic invasions' from Europe during the Iron Age, because there is no hard evidence to suggest there were any. |
That part I actually have to agree with. It was probably more like the Arab "invasion" of Egypt.....a few Arabs becoming rulers over many Egyptians....and the dominate culture becoming Arab.