I just wonder where people get the idea that if one has only 1 Irish grandma than they are a quarter Irish. Genetics just simply doesn't work that way. If it did, you would be exactly half of your mother and half of your father.
We all take after a certain side of our family more than another. There's no escaping that. I'm a spitting image of my grandma, except for my eyes which I get from my father (and his father, and his father, and so on).
My last name is Speed, which is certainly English. I feel no kinship towards England. I do feel a strong kinship towards Ireland. I don't know why, maybe it's the music.
Irish music has crossed so many boundries. Someone mentioned earlier the Bouzouki, but neglected the Banjo. I heard somewhere that there are more Banjos per capita in Ireland then there are in America. Banjos are neither Irish nor American. If I'm not mistaken, they're African.
And potatos came from South America.