Citizenship by descent

What the Foreign Births Register does

The Foreign Births Register is the route for many people born outside Ireland who have an Irish-born grandparent, or whose parent was an Irish citizen at the time of their birth but was not born in Ireland. Once entered on the register, the person is an Irish citizen and can apply for an Irish passport.

The Department of Foreign Affairs states that a person born outside Ireland to a parent born on the island of Ireland is already an Irish citizen. They usually apply directly for a passport.

For an application through a grandparent, citizenship begins with registration. The documents must establish the relationship from applicant to parent and from parent to Irish-born grandparent.

The Irish grandparent route

The usual grandparent file starts with the applicant’s civil birth certificate showing parental details. It then needs the relevant parent’s civil birth certificate, because that document connects the applicant to the Irish-born grandparent.

The Irish-born grandparent’s civil birth certificate is central. Where marriage, name changes, adoption, divorce or death records affect the chain, those records may also be needed so the Department can follow each name and relationship.

The Department of Foreign Affairs requires original civil records unless its guidance says otherwise. A church record, family tree, census entry or old passport may be useful background, but the official civil record is usually the document that proves the legal link.

Documents and witnessing

Adult applicants need to prepare the online application form, photographs, proof of identity, proof of address, civil birth records and any marriage or name-change documents that apply. The Department’s page sets out separate sections for adult applicants, minor applicants, photos, witnesses and fees.

Check the Department’s witness requirements before signing. The witness confirms identity, signs the form and photographs, and may need to belong to an accepted category. Incorrect witness details can result in the application being returned.

Order foreign civil records early. Long-form birth certificates, marriage certificates and replacement records can take time to obtain, depending on the country issuing them.

Timing and children

Timing is central where the applicant is expecting a child, or plans to have children. The Department of Foreign Affairs states that if an expectant parent is not on the Foreign Births Register when the child is born, the child will not be entitled to Irish citizenship through that line.

The same page says applications are processed in strict date order and currently take approximately 12 months. Allow for this when planning registration before a child’s birth.

The parent must be entered on the register before the child’s birth. Submitting the online application does not establish citizenship; check the registration date and certificate.

Where applications go wrong

Missing long-form birth certificates, unexplained name changes after marriage or incomplete adoption records can prevent the Department from confirming the family relationships.

Another common problem is timing. People often start the application after a pregnancy has already begun, without allowing for the Department’s strict date-order processing and the current approximate processing period.

We help establish the family line, identify the civil records needed and check names and dates before you complete the online application. For grandparent applications, the documents must connect each generation.

Common questions

Can I claim Irish citizenship through an Irish-born grandparent?

Many people born outside Ireland can apply through Foreign Birth Registration where a grandparent was born on the island of Ireland, subject to the Department of Foreign Affairs requirements.

Does my registration affect my future child?

Yes. The Department of Foreign Affairs says that if an expectant parent is not on the Foreign Births Register when the child is born, the child will not be entitled to Irish citizenship through that line.