How to Prove an Ancestor Never Naturalized

Why Naturalization Timing Matters

The core rule in most European jure sanguinis systems is that citizenship passes generation by generation at birth. If your ancestor gave up their original citizenship before their child was born, the chain is broken and nothing passes to that child — or to you.

Italy provides the clearest example: if your Italian grandfather naturalized as a U.S. citizen in 1910, but his child (your parent) was born in 1908, the chain survives because he was still Italian when that child was born. But if the child was born in 1912 — after naturalization — the Italian citizenship never passed. (Since Italy's 2025 reform, new applicants also need that parent or grandparent to have held only Italian citizenship at their birth — see the Italy guide.) Germany applies a similar rule under §4 StAG.

Italy pre-1912 vs. post-1912: Under both the 1865 Civil Code and the Nationality Law of 1912 (Law 555/1912), an Italian who voluntarily naturalized abroad lost Italian citizenship. What changed between them was the effect on minor children — the so-called minor issue, which the Court of Cassation settled in applicants' favour in July 2026 for children who were already citizens of their birth country. The exact naturalization date therefore still matters.

German 10-year rule: For German citizenship by descent cases, proving your ancestor never naturalized is not always enough. Under the 1870 nationality law, in force until 1 January 1914, Germans who lived abroad continuously for more than 10 years without registering at a German consulate lost their citizenship automatically — which is why claims through ancestors who emigrated to the US before roughly 1904 usually fail. Separately, §25 of the 1913 nationality law (RuStAG) made Germans who voluntarily acquired a foreign nationality lose German citizenship, a rule that lasted until 27 June 2024. If your ancestor never naturalized but emigrated early, the ten-year rule may still have ended their citizenship.

The USCIS Genealogy Program

The USCIS Genealogy Program is the primary federal gateway for requesting historical immigration and naturalization records for people who have been deceased for more than 50 years (or were born more than 100 years ago). It operates under USCIS but does not handle the same records processed for current immigration cases.

Form G-1041: Index Search Request

Form G-1041 is a records index search request. You submit it when you want USCIS to search their historical index for records related to your ancestor. The search costs $30 if filed online or $80 on paper per request (fees in effect since 1 April 2024). USCIS will tell you whether a record exists and provide a summary of what file types are available.

Form G-1041A: Record Request

Once you know records exist, Form G-1041A requests the actual documents. The fee is $30 online or $80 on paper per request. Processing often takes several months; check USCIS's current genealogy processing times. Note that many older A-files have been transferred to the National Archives, where they can be requested directly. Expedited processing is not available.

Certificate of Non-Existence of Record

If USCIS searches their records and finds no evidence of a naturalization, they can issue a Certificate of Non-Existence of Record (CNER) or similar negative result letter. This letter is important: several European consulates — including many Italian consulates — require either a naturalization certificate showing when the ancestor naturalized, or official documentation that no federal naturalization record exists, before they will process a jure sanguinis claim.

Note that a USCIS CNER covers only federal naturalization records held by USCIS. State and local court naturalizations (the most common route before 1906) are not in the USCIS system. You will need to conduct separate searches at the relevant state archives and county courts.

NARA: National Archives and Records Administration

NARA holds the most comprehensive collection of historical naturalization records in the United States. The key record groups to know:

Access: Many NARA records are available online through Ancestry.com, FamilySearch, Fold3, and directly at nara.gov. In-person research is possible at NARA's regional facilities. Requests for non-digitized records typically take 4–8 weeks.

State and County Court Records (Pre-1906)

Before the Naturalization Act of 1906, any court of record — federal, state, or local — could naturalize an immigrant. This means thousands of naturalizations were processed in county probate courts, superior courts, common pleas courts, circuit courts, and other local venues. These records were NOT sent to the federal government and are NOT in the USCIS or NARA federal databases.

To find pre-1906 naturalizations, you need to:

1. Identify the county where your ancestor lived (U.S. census, city directories, death records).
2. Contact the county clerk or state archives for that county to ask whether naturalization records from that period are held locally or have been transferred.
3. Search state archives — many states have microfilmed or digitized their court naturalization records. FamilySearch has indexed large collections for New York, Pennsylvania, Ohio, Illinois, and other high-immigration states.
4. Check Ancestry.com's state naturalization collections (look under "Immigration & Emigration" → state name).

After 1906, all naturalizations were required to go through federal courts, so the USCIS/NARA databases become much more reliable. If your ancestor arrived after 1906 and you find no federal record, the risk is that they naturalized in a state court under a transitional period, or that records were lost or misfiled.

U.S. Census Citizenship Codes (1900–1940)

U.S. decennial censuses from 1900 through 1940 asked about citizenship status for foreign-born residents. The census columns to look for are labeled AL, PA, and NA — sometimes written out as Al, Pa, Na or using abbreviations:

• AL (Alien) — the person had not yet filed any naturalization papers and was still a foreign national.
• PA (First Papers / Declaration of Intention) — the person had filed a declaration of intention to become a citizen ("first papers") but had not yet completed naturalization. This means they were not yet a U.S. citizen at the time of the census.
• NA (Naturalized) — the person had completed the full naturalization process and was a U.S. citizen at the time of the census.

The citizenship column appears under different headings in different census years:

• 1900 census: Column "Citizenship" for males 21 and over; coded AL/PA/NA.
• 1910 census: Same citizenship column, same codes.
• 1920 census: Column "Naturalization" — same codes but column layout differs.
• 1930 census: "Citizenship of foreign born" column — codes include NA (naturalized), PA (first papers), and AL.
• 1940 census: "Citizenship or naturalization status" — codes the same.

The 1940 census is the last to include citizenship columns. After 1940, finding naturalization status requires primary source documents. Ancestry.com, FamilySearch, and the National Archives have all major censuses digitized and searchable.

Country-Specific Consulate Requirements

Different consulates require different documentation to prove non-naturalization. Some practical notes:

Other Useful Record Types

• Alien Registration Records (AR-2 cards, 1940): Under the Alien Registration Act of 1940, all non-citizens 14 and older were required to register. An existing AR-2 card strongly suggests the person was still an alien in 1940. Requests go through USCIS Genealogy Program.
• Passport applications: NARA holds U.S. passport applications. If your ancestor applied for a U.S. passport, the application will show their citizenship status at the time — naturalized citizens were required to attach their naturalization certificate.
• Social Security death records and SS-5 applications: The SS-5 (Social Security application) sometimes lists birthplace and citizenship-related information. Access through SSA genealogy requests.
• Military draft registration cards (WWI and WWII): Draft cards often record citizenship or alien status. Digitized and available on Ancestry.com and FamilySearch.
• Voter registration records: Before motor-voter reforms, voter registration sometimes required citizenship proof. State archives may have old voter rolls showing whether a person registered as a citizen.

Building Your Evidence Package

A credible proof-of-non-naturalization package typically consists of multiple sources used together:

1. USCIS G-1041/G-1041A results — shows whether any federal naturalization record exists (required by most consulates).
2. NARA index search results — cross-checks the federal database independently.
3. State archives / county court no-record letter — addresses pre-1906 state court naturalizations.
4. Census evidence — 1900, 1910, 1920, 1930 census entries showing AL or PA status corroborate the absence of naturalization up to those dates.
5. Alien registration record (1940) — if available, is strong direct evidence of alien status as of 1940.
6. Death certificate — if the ancestor died without naturalization, the death certificate may list citizenship status or birthplace (suggesting alien status).

No single document is definitive on its own. Consulates are looking for a consistent picture across multiple sources. If records were destroyed (common for fires in county courthouses), documenting the record destruction and providing all available secondary evidence is the accepted substitute.