Welcome aboard Donnymark. Your situation isn't at all uncommon. I have a lot of first cousins in and around London and though the demarkations are by househould they are nonetheles similar to those under your roof. One set (both parents Irish) will say the only thing English about them is their accent and address, another set (1 Irish + 1 English parents) will say they half Irish half English while yet another set ( similarly 1 Irish + 1 English parents) will tell you they're English of Irish extraction.
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