Under the IRISH NATIONALITY AND CITIZENSHIP ACT, 1956. A child born posthumously whose father was on the date of his death an Irish citizen shall acquire Irish citizenship under this Act on the same conditions as if his father were alive when he was born. wouldn't that have made my father an Irish C...

My question I hope to be answered is. My great grandfather was born in Ireland and came to the United States. My Grandfather was born in the United states first generation, So I believe he would have been considered an Irish citizen, He died before my father was born. He died In Jan of 1940 and my f...