Ireland
Can You Get Irish Citizenship Through a Great-Grandparent?
Irish citizenship by descent through Foreign Birth Registration is available through an Irish-born grandparent, or a parent who was an Irish citizen at your birth. Source: dfa.ie
The Irish government has said there is no provision for a person to become an Irish citizen solely through a great-grandparent who was an Irish-born citizen. Source: Oireachtas, June 25, 2025
However, if your parent became Irish through Foreign Birth Registration or naturalisation before you were born, you can apply through that parent. Source: dfa.ie
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