I have shown previously similarities of Armenian and Celtic Cross Stones.
But there is more to that.
The Inequality of Human Races by Arthur de Gobineau.
This is in Russian and since I couldn’t find English translation of specific part I used google translator for that.
«The name of these warlike tribes originated from the word «gall», meaning «strong». It is linked with the ancient roots of language, which remained in Sanskrit, «wala» or «walya» — and has the same value. Sarmatian tribes, then the Goths, kept faithful to this form and named galls »walah». Slavs have reworked the word «wlach». Greeks pronounced it as «Celts» and Romans borrowed fheir pronunciation «Celtae «. Finally, it adopted the current form, «Galli». Besides that names galls had another name «Gomer» which in the biblical genealogy is the name of one of the sons of Japheth.
As an aside it is appropriate to mention the following interesting facts. Armenians, writing that name it in their Chronicles, turned it into a «Gamer». I can’t tell where it came from them, but perhaps they (Armenians) were relatives of the Celts. There is indirect confirmation of this in the Bible, where Armenians are called tribe to breakaway from these «gomer» or «gamir». In Genesis (x 3) they are called «Togarmah-sons of Homer».
He goes on describing in details the Bible geneology and connections of Armenians and Celts,etc… but I am lost in all those names, details.