What Is Citizenship by Descent?
Understanding jus sanguinis and how you may already be a European citizen
Citizenship by descent, known in Latin as jus sanguinis or “by right of blood,” is the legal principle that citizenship can be inherited through family lineage rather than earned through residency or naturalization.
If your parents, grandparents, or more distant ancestors were citizens of a European country, many of those countries recognize your right to claim that citizenship as a birthright, regardless of where you were born, where you live, or how many generations have passed.
For millions of Americans, Canadians, and Australians whose families emigrated from Europe one, two, or three (or more) generations ago, often through Ellis Island and other ports of entry, citizenship by descent is the most direct and often the most overlooked path to a European passport.
Jus Sanguinis vs. Jus Soli: What's the Difference?
Most people are familiar with jus soli, the “right of soil.” It is a legal principle that grants citizenship based on where you are born. The United States, Canada, and Australia all apply this principle (as well as many South American countries), which is why children born on American soil are automatically American citizens regardless of their parents’ nationality.
Europe largely operates on the opposite principle. Most European countries grant citizenship based on who your parents are, not where you were born. This means that a child born in New York to an Irish citizen is, under Irish law, an Irish citizen from birth, even if they have never set foot in Ireland and have no intention of moving there. It also means that a child born to American parents in Italy is not automatically an Italian citizen, unless some other legal condition needs to be triggered to avoid that child from being stateless.
Which Countries Offer Citizenship by Descent?
Every European country structures its citizenship laws differently, and the rules governing who qualifies, how far back the line can extend, and what disqualifiers exist vary enormously from program to program. The countries we work with include:
Some programs, like Germany, Hungary, Luxembourg, Italy (until recently), and Poland, have no generational ceiling in theory, meaning citizenship can travel through great-grandparents and beyond if the chain holds at every link. Others like Ireland and Portugal will technically allow citizenship to pass on forever, as long as each generation seeks recognition before having children. Others, like Slovakia, set a specific generational limit of parent, grandparent, or great-grandparent.
The rules can also change over time. Italy significantly restricted its citizenship by descent program in 2025, limiting new applications to those with an Italian parent or grandparent. Germany expanded access in 2021 for descendants of those persecuted by the Nazi regime. Slovakia opened its program entirely in 2022. In 2025, Canada retroactively allowed citizenship by descent to be claimed through an unlimited number of generations (yes, we do Canada too, even though it’s not European!). Staying current with these changes, and understanding how they affect your specific case, is a significant part of what we do.
What Are the Benefits of European Citizenship by Descent?
A European passport is one of the most valuable travel documents in the world, offering unparalleled freedom and opportunities.
Visa-Free Travel
Access to over 185 countries without visa requirements or with visa-on-arrival privileges. Learn more about our services.
Live & Work Anywhere in EU
The right to live, work, and study anywhere in the European Union without permits or visas.
Education & Healthcare
Access to European healthcare systems, education institutions, and social services.
Family Heritage
Pass citizenship to your children and future generations, creating lasting legacy value.
Global Opportunities
Enhanced career prospects, business opportunities, and retirement options across Europe.
Cultural Connection
Formal recognition of your family's heritage and a meaningful connection to your roots.
Frequently Asked Questions
What Disqualifies Someone?
This is where citizenship by descent becomes technically demanding, and where working with an expert matters most. The most common disqualifiers across European programs include the following.
Naturalization. If your ancestor became a citizen of another country, including the United States, they typically lost their original citizenship at the moment of naturalization. Whether children born before or after that naturalization are affected depends on the exact date and the laws of the specific country.
Pre-independence emigration. Several European countries did not exist as independent nations until the early 20th century. Poland, for example, did not exist between 1795 and 1918. If your ancestor emigrated from Polish territory before 1918, they may never have held Polish citizenship at all.
Gender-based transmission rules. Older versions of citizenship law in many countries only allowed citizenship to pass through the father. Children born to a female citizen before a certain date, 1951 in Poland, 1975 in Germany, 1948 in Italy, may not have inherited citizenship through their mother under the law as it existed at the time.
Renunciation. A formal renunciation of citizenship by an ancestor severs the chain at that point.
Understanding which disqualifiers apply to your family’s specific history is the first and most important step in any case we take on.
Does It Matter How Many Generations Back Your Ancestor Is?
It depends entirely on the country. Some programs are generous. Germany, Poland, Luxembourg, and Ireland allow the line to extend well beyond grandparents under the right circumstances. Others are more restrictive. Slovakia limits eligibility to parent, grandparent, or great-grandparent, and Italy’s 2025 law change narrowed the scope to parent or grandparent for new applicants.
What matters in every case is not just how far back your ancestor is, but whether citizenship passed cleanly through each generation between that ancestor and you. A break anywhere in the chain, whether caused by a naturalization, a female ancestor before the relevant date, or a renunciation, can end eligibility regardless of how recent the qualifying ancestor is.
What Documents Do You Need?
The documentary backbone of any citizenship by descent application is a complete vital records chain: birth, marriage, and death certificates for every person in the direct line from your ancestor to you. Depending on the country, additional documents may be required, including naturalization records proving an ancestor did or did not naturalize, census records, church registers, military booklets, passports, or archive confirmations. Many of these documents require certified translation into the language of the target country, and some require apostille authentication.
Building this chain, tracking down records that may be decades or a century old, filling gaps where documents no longer exist, and assembling everything into a submission-ready packet, is the most time-consuming and technically demanding part of the process. It is also where most self-guided applicants run into trouble.
Is It the Same as Applying for a Visa or Residency?
No, and this distinction matters. Citizenship by descent is not an immigration process. You are not asking a foreign government to admit you. You are asserting a legal right that already exists under their law. In most programs, if you qualify, you are already a citizen. The application is simply the formal recognition of that status. This is why the process is described in many countries as “confirmation” or “recognition” rather than “application.”
This also means that citizenship by descent generally does not require you to move to the country, learn the language, or demonstrate ties to the nation. You are claiming what is already legally yours.
How Long Does It Take?
Timelines vary dramatically by country, filing pathway, and current processing volumes. Some programs move relatively quickly. Luxembourg’s Article 7 process, handled entirely by mail, can conclude within a year. Others involve consular waitlists, court proceedings, or government review periods that stretch to two years or more. We provide realistic timeline expectations for your specific case and country during your consultation.
How Roots Recovered Can Help
We are a boutique European citizenship by descent consultancy with deep expertise across every major European CBD program. Unlike single-country specialists, we work across the full landscape, which means we can assess your ancestry holistically, identify every program you may qualify for, and tell you which path is strongest for your specific family history.
We handle the heavy lifting: lineage research, vital records procurement, document translation, application assembly, and coordination with in-country counsel where required. What we bring is not just process knowledge. It is the kind of case-specific legal and genealogical expertise that turns a complicated family history into a successful application.
If you have European ancestry and have ever wondered whether a passport might be waiting for you, the answer is worth finding out.