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Updated: June 2026

Case study · Hungary · Citizenship

How to Obtain an EU Passport When Grandfather Changed His Hungarian Surname to Russian During Soviet Times

Sometimes ancestral roots are severed not due to lost documents, but because of a single line in an ancestor's biography: grandfather changed his surname. During Soviet times, Hungarian and German surnames were frequently changed to Russian to avoid drawing attention—and generations later, this becomes a barrier. Andrew's documents show a Russian surname, while his Hungarian grandfather bore a different one. We explain step by step how we proved that this was one person and obtained an EU passport.

Anna KovalevskayaAnna KovalevskayaHead of Legal, BRIDGESReading time9 min readVerificationReviewed by an expert

This case is based on a real matter. The name and certain identifying details have been changed to protect confidentiality.

BRIDGES client story - How to Obtain an EU Passport When Grandfather Changed His Hungarian Surname to Russian During Soviet Times
Contents

Case at a glance

Situation, solution and outcome in seven lines

Client
Andrew, approximately 40 years old, from Saint Petersburg
Ancestry
Hungarian grandfather
Complexity
Grandfather changed his Hungarian surname to Russian during Soviet times
Program
Hungary, EU citizenship
Where the Line Breaks
At the grandfather's surname change
Solution
Locate the surname change record and grandfather's pre-war document
Result
Identity proven, EU passport obtained

Client story

Client's Story

Where they started

Andrew knew that his grandfather on his father's side was Hungarian, from the historical homeland that was once part of Hungary. However, his father's passport and Andrew's own passport bore an ordinary Russian surname. The Hungarian surname remained only in family stories.

Why the standard route did not work

When Andrew began gathering documents for an EU passport, the obstacle became clear. Citizenship by descent requires an unbroken line: grandfather—father—Andrew, and the surname must match in each generation. But it did not: grandfather had a Russian surname in his later years and his descendants likewise, while the roots showed a Hungarian surname. Formally, this appeared as two different family lines.

What BRIDGES had to solve

The reason was typical of its time. During Soviet years, grandfather changed his Hungarian surname to Russian—many did this to avoid suspicion and trouble. For the family, it was a minor matter; for the descent procedure, it was a rupture precisely where origin must be proven.

Why a standard answer would not do

Andrew turned to BRIDGES, understanding that the task was not to search for lost papers, but to prove: the person with the Hungarian surname in the roots and the grandfather with the Russian surname were one and the same.

In Soviet times my grandfather changed his Hungarian surname to a Russian one. Martin found the record of the name change and a pre-war document. The identity was proven.

Andrey, 40 · Andrew, of Hungarian descentThe name and certain identifying details have been changed to protect confidentiality.

What Was at Risk

What Was at Risk

A surname change by an ancestor severs the line of descent more thoroughly than a lost document: formally, two different family lines result. Identity must be proven—that the person with the old Hungarian surname and the ancestor with the new Russian one were the same individual. Without this, descent cannot be confirmed.

His documents show a Russian surname, his roots show a Hungarian one;

  1. 01The line grandfather—father—Andrew breaks at the surname change;
  2. 02Formally it appears as two different family lines;
  3. 03Hungarian and Russian spelling of the surname differ in letters;
  4. 04Without a surname change record, there is no way to close the gap.

The logic of the solution

How the matter progressed: from checks to result

The chart is built from the facts of this matter and shows the logic of the work without decorative or unverified data.

  1. 01
    Stage 1

    We identified exactly where the line breaks. In Andrey's and his father's documents, the Russian surname appeared, while the Hungarian grandfather, according to family records, had a different one. It became clear: the break occurred precisely with the grandfather, at the moment when he "became Russian." We needed to prove one thing—that the person with the Hungarian surname and the grandfather with the Russian surname were one and the same person, not two different people.

  2. 02
    Stage 2

    We found the record of surname change—the very bridge we needed. In the civil registry archive (ZAGS) for the place where the grandfather lived, we obtained the deed of name and surname change: the year, the authority, the old and new surname in a single document. In Soviet times, Hungarian and German surnames were changed frequently, and such records survived. It was this document that directly connected the grandfather's Hungarian surname to the Russian one—something no birth certificate could provide.

  3. 03
    Stage 3

    We obtained the grandfather's pre-war document with the Hungarian surname. We requested his birth record in the archive of his historical homeland, where he was registered under his original Hungarian surname. The name, year, and place of birth in this vital record matched the deed of surname change—confirming we were dealing with one person.

  4. 04
    Stage 4

    We clarified the orthography. The Hungarian spelling of the surname, its transliteration into Cyrillic, and the current Russian variant differed in letters. We prepared an explanation and a certified translation so the official would see one surname in three forms, not three different surnames and three different people.

  5. 05
    Stage 5

    We completed the lineage: grandfather—father—Andrey. Missing birth certificates were obtained through the civil registry, and testimony from living relatives was corroborated by a written statement under oath (affidavit) to give the authority a complete, unbroken picture of kinship.

Takeaway. Conclusion: an ancestor's surname change is not resolved by a birth certificate, but by the record of the change itself—it is precisely this that bridges the break. One must search for it, not accumulate more vital records.

How we solved the case

How we solved the case

The work was split into verifiable stages so that every conclusion rested on documents.

  1. 01

    We identified exactly where the line breaks

    In Andrey's and his father's documents, the Russian surname appeared, while the Hungarian grandfather, according to family records, had a different one. It became clear: the break occurred precisely with the grandfather, at the moment when he "became Russian." We needed to prove one thing—that the person with the Hungarian surname and the grandfather with the Russian surname were one and the same person, not two different people.

  2. 02

    We found the record of surname change—the very bridge we needed

    In the civil registry archive (ZAGS) for the place where the grandfather lived, we obtained the deed of name and surname change: the year, the authority, the old and new surname in a single document. In Soviet times, Hungarian and German surnames were changed frequently, and such records survived. It was this document that directly connected the grandfather's Hungarian surname to the Russian one—something no birth certificate could provide.

  3. 03

    We obtained the grandfather's pre-war document with the Hungarian surname

    We requested his birth record in the archive of his historical homeland, where he was registered under his original Hungarian surname. The name, year, and place of birth in this vital record matched the deed of surname change—confirming we were dealing with one person.

  4. 04

    We clarified the orthography

    The Hungarian spelling of the surname, its transliteration into Cyrillic, and the current Russian variant differed in letters. We prepared an explanation and a certified translation so the official would see one surname in three forms, not three different surnames and three different people.

  5. 05

    We completed the lineage: grandfather—father—Andrey

    Missing birth certificates were obtained through the civil registry, and testimony from living relatives was corroborated by a written statement under oath (affidavit) to give the authority a complete, unbroken picture of kinship.

  6. 06

    We submitted the citizenship application

    While it was under review, we kept explanations of the surname spelling ready to address questions immediately. Andrey received an EU passport—the grandfather's surname change ceased to be a barrier.

How the work went

From first contact to the result

  1. 01We identified exactly where the line breaks
  2. 02We found the record of surname change—the very bridge we needed
  3. 03We obtained the grandfather's pre-war document with the Hungarian surname
  4. 04We clarified the orthography
  5. 05We completed the lineage: grandfather—father—Andrey
  6. 06We submitted the citizenship application

The sequence and timing reflect this specific case and depend on how complete the documents are and on the decisions of the competent authorities.

Expert comment

An ancestor's surname change is common and deceptive. In Soviet times, a Hungarian or German surname was changed to a Russian one to live more peacefully, and two generations later it becomes a wall: the grandson's passport bears one surname, but his roots have another, and formally they appear to be different families. People bring stacks of birth certificates, but these only confirm the break. What resolves it is not a vital record, but the record of the surname change itself—it directly connects the old and new. With Andrey, we found this record and his pre-war document with the Hungarian surname, and they matched in name and year. The rest was a matter of technique—orthography and translations. The wall collapsed, and he received his passport.

Anna Kovalevskaya, Head of Legal, BRIDGESAnna KovalevskayaHead of Legal, BRIDGES

Outcome

What the client received

What was required
How we did it · Result
Locate where the line breaks
Analysis of surnames by generation · Break occurs at grandfather's surname change
Connect old and new surname
Record of surname change from civil registry · Bridge across the break
Prove this is one person
Pre-war document plus verification · Identity established
Obtain EU passport
Complete family line · Citizenship recognized
Obtain EU passport
Complete family line · Citizenship recognized

What there was: Andrey had a Russian surname, while his Hungarian grandfather changed his Hungarian surname to a Russian one in Soviet times, and the family line broke at this change. What we did: we found in the civil registry archive the record of the grandfather's surname change, directly connecting the old and new surname; we obtained his pre-war document with the Hungarian surname; we verified the match in name, year, and place of birth; we explained the orthography and completed the lineage. What the client received: proven identity and an EU passport.

Practical takeaway

What matters in a similar situation

  • Conclusion: an ancestor's surname change is not resolved by a birth certificate, but by the record of the change itself—it is precisely this that bridges the break. One must search for it, not accumulate more vital records.
  • Andrey received a European passport, and the surname change that had seemed insurmountable across generations proved to be a solvable problem.
  • A record of the change of surname together with a pre-war document restores identity and the family line. We will look at your case.

FAQ

Questions people ask in a similar situation

01Can family roots be proven if an ancestor changed their surname?

Yes. The key is finding the record of the surname change itself: it directly connects the old and new surname of one person and closes the break in the family line.

02Where to search for a surname change record?

In the civil registry archive (ZAGS) at the location where the ancestor resided at the time of the name change. During the Soviet period, such acts were formalized and in most cases have been preserved.

03Why are birth certificates insufficient?

They confirm the discrepancy but do not explain it: in some documents the old surname appears, in others the new one. Only a record of surname change can link them.

04What should be done about varying spellings of the surname?

Verify the Hungarian spelling, the Cyrillic transliteration, and the current variant, and support with an authorized translation so that the authority sees one surname rather than different versions.

05Will a statement from relatives help?

As a supplementary document—yes. A written statement under oath (affidavit) strengthens the picture of kinship, but the foundation remains archival records of the surname change and birth.

06Which documents were key in this case?

We identified exactly where the line breaks. In Andrey's and his father's documents, the Russian surname appeared, while the Hungarian grandfather, according to family records, had a different one. It became clear: the break occurred precisely with the grandfather, at the moment when he "became Russian." We needed to prove one thing—that the person with the Hungarian surname and the grandfather with the Russian surname were one and the same person, not two different people. We found the record of surname change—the very bridge we needed. In the civil registry archive (ZAGS) for the place where the grandfather lived, we obtained the deed of name and surname change: the year, the authority, the old and new surname in a single document. In Soviet times, Hungarian and German surnames were changed frequently, and such records survived. It was this document that directly connected the grandfather's Hungarian surname to the Russian one—something no birth certificate could provide.

07Why did the standard route not suit the client?

When Andrew began gathering documents for an EU passport, the obstacle became clear. Citizenship by descent requires an unbroken line: grandfather—father—Andrew, and the surname must match in each generation. But it did not: grandfather had a Russian surname in his later years and his descendants likewise, while the roots showed a Hungarian surname. Formally, this appeared as two different family lines.

About the author

Anna Kovalevskaya

Author: Anna Kovalevskaya

Head of Legal, BRIDGES

I have worked with citizenship and residency matters in European countries for 12 years. Programme requirements and application practices change, so I assess each matter against the current rules, the applicant's immigration history, family composition and the documents supporting the legal basis for the application.

I lead matters from the preliminary assessment through to the grant of status. In complex situations, I identify the circumstances that may affect the review, establish the legal logic of the application and oversee the consistency of the supporting documents at every stage.

During the consultation, you will receive an assessment of the available legal grounds, a clear understanding of the chosen route and a list of issues that should be resolved before filing. Once the engagement begins, I oversee the application and the key decisions of the BRIDGES team.

Prepared on the basis of BRIDGES practice and reviewed by a subject-matter expert.

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Anna KovalevskayaHead of Legal, BRIDGES
Anna Kovalevskaya, Head of Legal, BRIDGES

Names and certain details have been changed to protect client confidentiality. The result described reflects one specific situation and is neither a public offer nor a guarantee of a similar outcome. Programme terms are stated as of 2026 and may change - please confirm current parameters with a BRIDGES consultant.