I thought I'd just insert a little scientific logic in a conversation that was nearing unintelligible due to misinformed passion. As for the Celtic stuff, I don't mind it too much, since I find joy in attending all those festivals, including things like Oktoberfest and the Celtic festivals----I can't resist authentic food of any kind, unfortunately.
But, isn't there a little Spanish Armada background in "Black Irish" to begin with?
My father was "black Irish" and he thought this was the source of his family's black hair (about evenly divided among black, brown, and red hair).
However, there is another potential source of this dark-haired strain, and that is the original, pre-Celtic population, who were probably genetically related to the Basques and the pre-Celtic, pre-Phoenician population of old Iberia. Those people, who immigrated from northern Africa at the end of the last pleniglacial epoch, were distributed throughout Europe and are represented in European history by e.g. the Ligurians and other non-Indo-European remnants. They will partly have accounted for the "pre-Greek" or "Pelasgian" substrate of Greek society, which however had already received an Indo-European-speaking population related to the Anatolians (who spoke Luwian and Hittite) who burned Troy II in the 19th century B.C., seven centuries before Priam's reign.
In fact, the builders of Troy II, and the jewelers who fashioned "Priam's Treasure" from Troy II, were probably related to the "black Irish" and the builders of Stonehenge.