What a thing to find out pre-St. Patrick's Day

I am not Irish. I grew up thinking I was 88% German, 12% Irish, with the Irish coming from my maternal grandmother. She believed she was 50% Irish. She wasn't.

My aunt just shared the results of her Ancestry/DNA kit. Her mother's daughter, she was expecting to find she was about 25% Irish.

No Irish whatsoever.

Mostly German, the rest nearly equal parts Danish, Norwegian and Swedish.

She represents my dad's side of the family.

My mom's family always maintained they were 100% German. With what I just learned about my dad's side, I highly doubt that. 

I also wonder if I really care.