I just noticed your "Union Jack"....
That explains a lot.
As I said, you can call yourself what you want, but I know you are not Irish. I have more than one Grandparent who is Irish - and I know that I am not Irish.
Honestly, the real Irish would wet their pants laughing if you said to them you are Irish. Much like you would if a Frenchman said he was American because his Great Grandparent was born in the USA.
As for the "Union Jack" stuff. I don't know why you feel it explains a lot. It's interesting you bring up flags, since the flag you adore on your page not only is taken from a nation of Britain, but even more amazing is that it was flown by the Scots-Irish, who are the same people as the Unionists in Northern Ireland you think of as scum.
The irony eh?