I am trying to see if I am eligible for Irish citizenship and I am not sure if my grandmother held Irish citizenship or not, it's rather complicated. My grandmother was born in Nottinghamshire England in 1925. Her parents were Irish though, her mother was in England working at the time of her birth. She then moved to the US when she was 4 years old. Would she have an Irish passport from 1925-1929? She passed many years ago and my family is having a hard time tracking any of this down. its added complexity because her birth comes right after the Irish revolution. Any guidance from folks out there would be great. I have found her birth registration on Ancestry from the England & Welsh list. How do I find if she had an Irish passport?