Can I claim Irish citizenship through a great-grandparent?
Not directly. A great-grandparent born in Ireland is not enough on its own. The claim works only if the generations between you behaved in time: your parent must have been entered on the Foreign Births Register before you were born, claiming through their own grandparent. If they were, they were an Irish citizen at your birth, and you can register in your turn. If they never registered, or registered after you were born, the chain is broken and cannot be repaired backwards. This is where most great-grandparent claims end. It is also why families who may want the option register each generation promptly, even when no passport is needed yet.
Useful pages: Irish in USA · The Irish surnames map · Trace your Irish roots · Coming home · Irish around the world
Sources
- Department of Foreign Affairs: Foreign Births Registration, citizenship and passport guidance, ireland.ie
More in Irish in USA and the diaspora
- What is the Foreign Births Registration, and who qualifies?
- What documents do I need for a Foreign Births Registration application?
- Does my child qualify if I register my own foreign birth after they are born?
- What is the difference between citizenship by descent and the Foreign Births Register?
- How do I get an Irish passport for the first time as an adult abroad?