@Harika: yup, I've been to Genova plenty of times. I was fluent in Italian as a child. Shame on me, I've lost almost all of it, but I still can understand spoken Italian.
@Wild-in-tent: The Celts as a group belong to the indoeuropean group, clearly recognisable by cognates... words all European languages share. The Greeks and Romans were good in keeping tracks of history, so did the Egyptians. The mainland of the Celts were in South Germany, France from where they moved to the East all the way down to middle east and other groups moved to the West and North west. Later the Scotti moved around the Belgae who had invaded Britain to settle Ireland (before Christ) and then they moved on to Scotland where they assimilated the Picts and Norse. The middle East branch disolved as all the other branches did. They had lived in and near Turkey and most likely they could leave their traces on all people who lived their as well: like the Phoenicians and Hebrew. Those movements are traceable through historical documents, linguistic evaluations. and analysis of cultural remains, like graves, pottery, and such.
Gàidhlig and Gaeilge are so close together because they developed out of the same root. Welsh, Britanny, and the Goidelic languages (Gaeilge and Gàidhlig) are also close, closer as Goidelic to Hebrew! The Gàidhlig had to absorb Pictish which belonged to the Cymric languages and the Norse, whilst the Gaeilge developed on its own.
Just look at English English, Scottish English, Canadian English, American English! Isn't it amazing how quickly they have developed their own set of characteristicas in such a short time and even as we have now an abundance of communication tools, they continue to develop on their own?
Christianization was a factor of spreading the word around even literally. Traders and mercenaries contributed to it too. Three ships of how many don not justify to change a whole nations ancestry. But it way have introduced a couple of new words.
All in all: in my humble opinion , the Galater may have influenced the middle east, the Celtiberers left their mark on the Romans, and the Romans left their marks on all affected European tribes for sure, and kist let the Irish be what they are, a people moving out of the threatened cradle of Celts.
