After the 2025 reform, almost every claim to Italian citizenship by descent now turns on a single question: was your Italian ancestor exclusively an Italian citizen at the moment that mattered? And the answer does not lie in an Italian document. It lies in an American one — the record of whether, and above all when, that ancestor became a citizen of the United States. It is the paradox of the new law: the paper that proves your ancestor became American is the same paper that decides whether you can become Italian.
This page is the companion to How Italian citizenship by descent works after the 2025 reform — the naturalisation record described here is precisely the proof that page says now decides most claims.
Two questions, and a whole line stands or falls
Everything hinges on two points. First: did the ancestor naturalise before the birth of the next person in the line, or after? Naturalise before, and in many cases the chain breaks at that point; after — or never — and the line holds. Second: was that naturalisation voluntary, or automatic and imposed — as it was for women who lost their citizenship simply by marrying a foreigner, a loss Italian courts now regard as unlawful? A documented yes or no can be worth the entire recognition.
Often the most valuable record is not one that proves a naturalisation, but one that certifies its absence: official proof that an ancestor never became an American citizen at all.
How American naturalisation worked
To read these records you have to know how they were made. Until 1906 almost any court — federal, state or county — could naturalise, and the registers are often bare: little more than a name and a date. From 27 September 1906 the process became federal and standardised, and from then the documents are rich: exact date and place of birth, the ship and date of arrival, spouse, children, address — the leap from a hint to a proof. The path usually came in two stages: the Declaration of Intention (the “first papers”) and, years later, the Petition for Naturalization (the “second papers”), leading to the final certificate. Not everyone finished — and someone who stopped at the first papers was not a citizen, a detail that changes everything.
Where these records live
They are scattered, and that is the difficulty. Federal cases after 1906 are held by the National Archives (NARA) and the USCIS Genealogy Program; earlier ones by county and state courts. The picture is completed by the census — which from 1900 to 1930 notes each immigrant’s citizenship status — by ship manifests and by voter rolls. Establishing the truth means cross-checking all of them, not stopping at the first.
Why doing it alone is risky
Because the name you are looking for is often not the one you expect. Ancestors appeared under surnames that were mangled, translated, sometimes replaced entirely — as in the case we tell elsewhere on this site, where the Sicilian grandfather of a future pope lived his American life under a French surname. Because the records are divided among different agencies, with long waits and precise request procedures. And because a date misread on a hundred-year-old form can sink — or save — a case.
How I work
This is where I come in. Through established correspondents in the United States I locate and obtain the naturalisations, certificates, county records and census returns that concern your ancestor. I read them against the Italian civil acts I reconstruct in the archives — birth, marriage, death — and from that comparison I build the proof of exclusive citizenship that a claim now requires. The result is a complete dossier, ready for the consulate or the court.
I am a professional genealogist and a member of the Association of Professional Genealogists: the research and documentation are my craft; where a judicial route is needed, I work alongside legal specialists in Italy who handle the filing.
Not sure whether your ancestor naturalised?
That single question often decides a citizenship case. In a preliminary evaluation I tell you how to find the answer — and whether your claim is worth pursuing.
This page is general information and reflects the position as of July 2026; it is not legal advice. Every case turns on its own documents.