2. Until the Germanic invasions starting in the first century BC, Spain was a Celtic country, as was Gaul.
Very True, takes a scientist to confirm a legend.
Galicia, if I'm not mistaken.
Big error. Before the roman invasion, we know there was a celtic language in the iberian peninsula (celtiberian), one indoeuropean non-celtic (lusitanian) and two non indoeuropean (iberian and basque). There was a little germanic invasion in the first century BC, but it was rejected for celtiberians.
And how can you say irish origins are spanish? We the spanish can't distinguish physically an Irish from an English, and you can't distinguish spanish from italians (though for us the differents are very obvious).