Foreign Birth Registration: Mistakes That Can Delay Irish Citizenship Applications

Foreign Birth Registration (FBR) can provide a route to Irish citizenship for people with Irish ancestry. However, the application process can be complex with several potential hurdles along the way. Issues such as incomplete documentation, registration discrepancies and application errors can result in significant delays or, in some cases, refusals.

Understanding these common pitfalls can help applicants prepare a stronger application and avoid unnecessary complications.

This blog explores eight of the most common FBR mistakes that Fragomen regularly helps clients identify and avoid.

1. 1. 1. Neglecting late birth registrations

Civil birth registration was not always universal or rigorously enforced, particularly before 1922 and in rural areas. If the birth occurred after 1864, a civil certificate must be submitted with the FBR application. Where a certificate is unavailable, late birth registration may be required. Fragomen can provide guidance on the registration process.

2. Assuming gaps in documentation will be understood

If there are any discrepancies in dates, names or other personal details, applicants should not assume that the Department of Foreign Affairs and Trade will overlook gaps without an explanation.

3. Omitting official adoption documentation

Applications involving adoption are subject to specific documentary requirements and often require additional registration steps.

4. Basing applications on DNA test results

FBR applications cannot rely on commercial DNA testing scores. The Irish Government requires a formal, documented paper trail of civil-status records to prove lineage.

However, a DNA test can be a useful starting point. Following this, applicants may investigate their ancestry to determine eligibility for Irish citizenship by descent.

5. Incorrect witnessing or certification of documents

It is crucial to follow the Department’s specific protocols for witnessing and certifying documents. Failure to do so can lead to significant delays and expenses.

6. Missing the deadline for submitting originals

After submitting an application online, applicants must send the original supporting documents within 20 weeks. If this deadline is missed, the application will expire and the applicant will need to start over.

7. No official proof of name usage

Applicants who have assumed a name without official registration may need to provide proof of name usage. This evidence can help establish the applicant’s identity for FBR and confirm their lineage.

8. Multi-generational documents from different jurisdictions

FBR applications often require records from multiple jurisdictions across several generations. Each country has its own requirements for issuing original certified copies of documents. Navigating these differences can be tricky, so applicants should allow sufficient time to obtain the records and seek guidance if needed.

The importance of getting the application right the first time

While small mistakes or omissions might not always lead to an outright refusal, they can add substantial delays to the process. In some cases, missing or incorrect documents may extend processing times by four to six months.

With processing times are currently around one year from the date of submission, ensuring that all supporting documents are complete and accurate from the outset can help avoid unnecessary delays.

Fragomen can help applicants navigate the FBR process and ensure the application is as robust as possible.

Need to know more?

For more information about the Irish FBR process, please contact the Fragomen Ireland private client team at [email protected] or visit Fragomen's Ireland immigration services page.

This blog was published on 3 September 2026 and reflects information available at that time. Updates may occur as policies evolve. To stay informed on the latest immigration news and analysis, please subscribe to our alerts and follow us on LinkedIn, Twitter, Facebook and Instagram.