EU citizenship by descent, also known as European citizenship through ancestry, is a legal pathway that allows individuals to claim an EU passport if they can prove direct lineage to a parent, grandparent, or, in some cases, a great-grandparent who was a citizen of an EU Member State.
This right is grounded in the principle of jus sanguinis (citizenship by blood), and it enables people to reconnect with their ancestral roots while simultaneously unlocking the benefits of European citizenship.
If you have a qualifying EU family connection, this guide explains how to screen a possible claim, build the document chain, and distinguish recognition of existing citizenship from registration or acquisition, and how Global Citizen Solutions (GCS) can help with the immigration process.
Key Takeaways – EU Citizenship by Descent
How EU citizenship by descent works?
If you can prove that a parent, grandparent, or sometimes even a great-grandparent was a citizen of an EU country, you may qualify to reclaim that citizenship. Unlike citizenship by naturalization, which may require residency, language skills, and integration, or citizenship by investment, which requires financial contributions, citizenship through ancestry can be more direct and cost-effective.
Note that there is no single EU application or universal ancestry rule. Eligibility for this pathway is determined under the relevant country’s nationality law, and EU citizenship follows once that Member State’s nationality has been recognized or acquired.
For instance, Poland has no generational limit if continuity is proven, and the applicant must establish that Polish citizenship was acquired and remained legally continuous through the relevant family line.
On the other hand, Ireland restricts eligibility to parents and grandparents. A person born outside Ireland to an Irish-born parent is already an Irish citizen, and a person with an Irish-born grandparent may become a citizen through the Foreign Births Register.
Because there is no EU-wide standard, applicants must research the laws of their ancestral country.
EU Citizenship by Descent Eligibility Screening
The eligibility for EU citizenship by descent depends entirely on the nationality laws of the specific EU member country.
Eligibility cannot be determined by counting generations alone. Applicants must identify the relevant country, confirm that the ancestor held its citizenship and establish whether citizenship passed through each parent-child link under the law applicable at the time.
This is where generational limits, the maximum number of generations you can go back to claim citizenship, come into play.
Some examples include:
- Ireland: If you were born outside Ireland to a parent born on the island of Ireland, you may already be an Irish citizen. If your parent was also born abroad, but one of your grandparents was born on the island, you may be eligible to register on the Foreign Births Register. Registration is not required in the first scenario, but is essential in the second.
- Italy: Under Law 74/2025, applicants born abroad with another nationality may qualify if a parent or grandparent holds, or held at death, only Italian citizenship, or if an Italian parent lived in Italy for at least two consecutive years after acquiring citizenship and before the applicant’s birth or adoption. Previous rules may apply to applications submitted or appointments confirmed on 27 March 2025. The citizenship chain must remain unbroken.
- Poland: Uses a confirmation procedure rather than a new citizenship grant. There is no simple generation limit, but the applicant must prove that Polish citizenship existed and passed through every relevant generation without being lost under the law applicable at the time.
Applicants must provide official documents to prove their lineage, including birth certificates, marriage certificates, passports, nationality certificates, registry extracts, naturalization records, renunciation records, or official no-record evidence. This legal documentation serves as evidence that the ancestor was indeed a citizen of the EU country during a relevant time period.
In many cases, governments require certified translations of these documents (especially in countries where the official language may not be English).
It’s important to note that there is no common EU-wide rule for citizenship by descent. Each EU country has its own laws, generational restrictions, and documentation requirements.
In summary, you may qualify for citizenship by descent in Europe if:
- You can prove a direct bloodline (jus sanguinis) to an EU citizen ancestor.
- The relevant citizenship was not lost, renounced, or otherwise interrupted before the next transmission event under the law applicable at the time.
- The family line satisfies the relevant country’s transmission, registration, and historical requirements. Not every country expresses these requirements as a simple generation limit.
For many applicants, the eligibility question comes down to tracing family history and verifying whether the citizenship link was maintained legally through each generation.
Documentation Chain for Citizenship by Descent in Europe
Applying for EU citizenship by descent requires substantial proof of your ancestral lineage. The exact documents you’ll need depend on the ancestral country. Below is a breakdown of the most commonly requested documents and how they work together.
| Link to establish | Possible evidence | What it proves | Important limitation |
|---|---|---|---|
| Qualifying ancestor | Birth record, citizenship certificate, passport, national register record | Identity, birthplace or nationality status | A birthplace alone may not establish citizenship |
| Ancestor’s status when the next generation was born | Naturalization, non-naturalization, loss, or renunciation records | Whether nationality could legally pass | Rules depend on the law and date |
| Each intervening parent-child relationship | Long-form birth and marriage records; adoption or parentage orders where applicable | Continuous legal descent | Names, dates and parentage must be consistent |
| Name changes | Marriage certificate, deed poll or official name-change record | Connects records using different names | Informal explanations may not satisfy the authority |
| Applicant identity | Full birth certificate, passport and civil-status records | Applicant identity and current status | Format requirements vary |
| Filing compliance | Certified copies, translations, apostille or legalization where required | Document acceptability | Not every document requires the same authentication |
Translation and legalization
Check the receiving authority’s rules for originals, certified copies, translations, apostilles, legalization and document age. An apostille is not required in every case. For example, EU Regulation 2016/1191 simplifies the use of certain public documents between EU Member States, while documents from other countries may need an apostille or consular legalization.
Step-by-Step Guide: How to Get EU Citizenship Through Ancestry
If you’ve discovered a parent, grandparent, or great-grandparent from Europe, you might be wondering how to get EU citizenship through ancestry.
While the specific requirements differ by country, the process follows these key steps:
- Identify your ancestral country: Start by determining where your ancestor came from. Since citizenship by descent in Europe is handled individually by each EU member state, this is essential as you need to apply through that country’s government.
- Research that country’s citizenship laws: Review the nationality rules of your ancestral country, paying close attention to generational limits and the applicable laws. For example, Ireland recognizes up to grandparents, while Italy used to have no limitations, but now has stricter requirements.
- Confirm your eligibility: Map every birth and nationality event in chronological order. Confirm whether the transmitting parent held the relevant citizenship when the next person was born and whether any loss, renunciation, naturalization, registration, or residence rule affected transmission.
- Collect the required documents: After the preliminary country-law screening, gather birth, marriage, and death certificates, along with supporting documents like passports or military records. You will likely need certified copies issued by civil registries or archives.
- Check translation and authentication requirements: Follow the receiving authority’s rules for certified copies, translations, apostilles, and consular legalization. Requirements depend on the country that issued the document, the receiving authority, and the type of record.
- Prepare and submit the application: Complete the official forms for the citizenship by descent application process and submit them, along with your documentation, to the relevant ministry or consulate. Some countries allow filing abroad via embassies, while others require you to submit documents in person.
- Wait for approval: Processing begins only when the application is complete, so practical timelines can change. Check the responsible authority immediately before filing. Ireland currently publishes an approximate 12-month FBR processing period for completed applications.
EU Countries That Offer Citizenship by Descent
The following comparison shows how three CBD routes work. Ireland uses automatic citizenship and foreign-birth registration, Italy applies recognition rules substantially revised in 2025, and Poland confirms whether citizenship already exists.
| Country | Nature of route | Initial screening question | Main procedure discussed |
|---|---|---|---|
| Ireland | Automatic citizenship in some parent cases; registration in qualifying grandparent cases | Was a parent or grandparent born on the island of Ireland, and was any required registration completed before the applicant’s birth? | Foreign Births Register |
| Italy | Recognition or acquisition depends on current statutory conditions and the historical chain | Does the line satisfy Law 91/1992 as amended by Law 74/2025, including the additional conditions for people born abroad with another nationality? | Recognition of citizenship by descent |
| Poland | Confirmation that Polish citizenship is possessed under applicable law | Can the applicant prove that citizenship existed and was not lost through the relevant family line? | Confirmation of possession of Polish citizenship |
Most of the 27 EU member states recognize some form of nationality through jus sanguinis (right of blood). However, many countries restrict eligibility to children of citizens only, making them less relevant for applicants seeking to claim citizenship through grandparents or more distant ancestors.
The countries we’ve focused on here provide the most accessible routes, offering clear procedures, recognition of multiple generations, or special historical provisions.
Three Country-Specific Citizenship-By-Descent Overviews
Italy
Italian citizenship by descent was famous for its unlimited generational claims. However, new reforms now restrict Italian citizenship by descent to applicants with either an Italian parent or grandparent.
Under Law No. 74/2025, a person born abroad who holds another nationality may qualify if a parent or grandparent holds, or held at death, only Italian citizenship, or if an Italian parent lived in Italy for at least two consecutive years after acquiring citizenship and before the applicant’s birth or adoption.
Previous rules may apply to qualifying applications, court cases, or consular appointments lodged or confirmed by 11:59 p.m. Rome time on 27 March 2025. Applicants must still prove an uninterrupted citizenship chain using civil records, naturalization evidence, and other required documents. Citizenship recognition and passport issuance are separate procedures.
Ireland
If you were born outside Ireland to a parent born on the island of Ireland, you are an Irish citizen from birth. If you and your parent were born abroad but a grandparent was born on the island, you may qualify through the Foreign Births Register.
A more distant descendant may qualify where the intervening parent became an Irish citizen through the Foreign Births Register before the applicant was born.
Applicants must document the complete relationship chain using civil and identity records. Once registered, the applicant becomes an Irish citizen and can apply separately for a passport. Completed Foreign Birth Registration applications currently take approximately 12 months.
Poland
Polish citizenship by descent usually involves confirming existing citizenship, not applying for a new grant. There is no simple generation limit: The applicant must prove that an ancestor held Polish citizenship and that it passed legally through every generation without being lost under the law applicable at the time.
Applications require civil records connecting the ancestor to the applicant, evidence of Polish citizenship, and relevant naturalization or loss records. The competent provincial governor makes the decision, while applicants abroad may submit through the appropriate Polish Consulate. Confirmation must be completed before the separate passport process.
Rights After Nationality Is Recognized or Acquired
Once a person holds an EU Member State nationality, they also hold EU citizenship. This provides important movement and equal-treatment rights, although national registration, healthcare, education, and social-security conditions may still apply.
Freedom of movement
A national of an EU Member State is also an EU citizen and may move to another Member State to work, study, seek work, or retire without the need for visas or to apply for an EU residence permit. Stays beyond three months can be subject to status-based conditions and residence-registration formalities.
EU nations frequently rank among the best places to retire in the world, combining high-quality healthcare, strong social systems, and cultural richness. The right to live, work, and study in the EU also extends to your immediate qualifying family members in most cases.
Visa-free travel
A major attraction of acquiring an EU passport is its global mobility. According to the Global Citizen Solutions Passport Index, most EU passports rank among the world’s strongest, providing visa-free or visa-on-arrival access to over 170 destinations. This makes travel easier – not just within the EU but also globally.
Healthcare and education access
EU citizens moving within the EU benefit from equal treatment and coordination rules, but citizenship does not always guarantee free healthcare or university education throughout Europe. Healthcare coverage depends on factors such as residence, employment, social-security affiliation, and insurance. University admission and tuition rules also vary, although EU citizens cannot be charged differently solely because of their nationality.
Dual citizenship
One of the most appealing aspects of citizenship by descent in Europe is that many EU member states allow you to retain your existing nationality. By becoming a dual citizen, you can enjoy the rights and benefits of both your current country of citizenship and your ancestral EU state, broadening both mobility and legal protections. However, whether dual citizenship is possible depends on both the ancestral country’s law and the law of the applicant’s existing country or countries of nationality.
Inheritance for children
EU citizenship gained through ancestry is not exclusively for personal gain as it can become a legacy you pass down.
Once your citizenship is recognized, it can, in many cases, be passed down to your children and future generations, ensuring that your family maintains permanent access to Europe’s freedoms and opportunities.
Note that future transmission is governed by the national law applicable when the child is born or when any required declaration or registration is made.
Considerations Before Applying for EU Citizenship by Descent
While EU citizenship through ancestry is often one of the most straightforward pathways to nationality, it is not without obstacles. Applicants should be aware of the following challenges before beginning the process.
Documentation difficulties
The process relies on official records such as birth certificates, marriage certificates, and death certificates to establish a continuous family link. In some cases, these documents may be lost, destroyed, or incomplete, especially when dealing with ancestors who emigrated decades ago. Obtaining certified copies from civil registries or archives can be a complex process.
Processing delays
Even after submission, applications may take a few months or years to be approved. Patience is required, as lengthy timelines are common across many EU states.
Legal complexity
Each EU country has its own specific rules and generational limits. While Poland may allow unlimited descent claims, Ireland restricts eligibility to grandparents, and Italy recently reduced claims to parents or grandparents only.
Language or cultural requirements
Most countries do not require language tests for citizenship by descent, but there are exceptions. Some EU states ask applicants to demonstrate a basic knowledge of the national language or to show integration into the culture. This is less common than in naturalization, but worth verifying before applying.
Common Breaks in the Citizenship Chain
A citizenship-by-descent claim may fail or require additional evidence where:
- The ancestor’s birthplace does not establish that they held the relevant citizenship.
- The ancestor naturalized elsewhere before citizenship could pass to the next generation.
- Citizenship was renounced or lost under the law applicable at the time.
- The required registration was not completed before the next generation was born.
- Names, dates, or parentage differ across civil records.
- Historical border changes affect which country’s nationality law applies.
- Adoption, marriage, or historic maternal-line rules affect transmission.
- Documents do not satisfy the authority’s translation, certification or legalization requirements.
