Every person born in Ireland is an Irish citizen.
This includes persons born in an Irish ship or aircraft, regardless of its location. Any person, either of whose parents was born in Ireland, is an Irish citizen. A person with one grandparent born in Ireland may claim Irish citizenship through foreign birth registration. This can be a painstaking process and requires conclusive documentary proof that the applicant is indeed the grandchild of the person born in Ireland. Applications should be made through the local Irish Consulate or Embassy.