Did Your Ancestor's Naturalization
Break the Line?
The single date that decides most claims: when your Italian ancestor became a citizen of another country, compared with when their child was born.
Last updated: November 7, 2026
Short answer (as of November 2026)
Usually, what matters is the order of two dates. If your Italian ancestor naturalized after their child in your line was born, the child was already Italian and citizenship passed down. If they naturalized before that child was born, they generally had already lost Italian citizenship and could not pass it on. Since 2025 the same date also decides whether a grandparent counts as "exclusively Italian" for you.
- Naturalized after the child was born: the line usually continues
- Naturalized before the child was born: the line usually breaks
- Never naturalized: prove it with a certificate of non-existence
- Naturalization papers give the exact date; family memory is not enough
Compare two dates
Find your Italian-born ancestor's naturalization date, and the birth date of their child in your line. Then:
| What happened | Usual result for the line | What to get |
|---|---|---|
| Ancestor naturalized after the child was born | Citizenship passed to the child; the line continues | Naturalization record showing the date |
| Ancestor naturalized before the child was born | Generally broken: the ancestor was no longer Italian | Check other lines in your family |
| Ancestor never naturalized | The line continues | Certificate of non-existence (CONE) from USCIS |
| Child was a minor when the parent naturalized | Usually fine since the July 2026 Cassation ruling, for U.S.-born children | See the minor issue |
| You do not know | Unknown until you have the records | Request naturalization records first |
Courts have generally treated a voluntary naturalization as the event that ended Italian citizenship under the old law. For an Italian woman who became a U.S. citizen through marriage rather than by applying, the analysis is different; see citizenship through a female ancestor.
Examples
Naturalized after the child was born
Your great-grandfather arrived in 1905 and became a U.S. citizen in 1925. Your grandfather was born in 1915. Your grandfather was born Italian, ten years before the naturalization, so the line continues through him.
Naturalized before the child was born
Your great-grandfather became a U.S. citizen in 1912, and your grandfather was born in 1916. By 1916 your great-grandfather was no longer Italian, so citizenship did not pass through him. Another line in your family may still work.
Why the date matters twice since 2025
Under the 2025 rules, you also need a parent or grandparent who held exclusively Italian citizenship, generally judged at your birth. An Italian-born grandparent who became a U.S. citizen before you were born usually does not meet that test, even though they passed citizenship to your parent. See Law 74/2025.
How to find the naturalization date
- Request records from the USCIS Genealogy Program, the National Archives, or the court that granted naturalization. See our naturalization records guide.
- Check the U.S. census: 1900 to 1930 censuses asked about naturalization status and year of arrival. They give clues, not proof.
- If no record exists, request a certificate of non-existence from USCIS.
Have the dates but not sure what they mean?
Send us the naturalization date and the birth dates in your line. We will tell you where you stand.
Sources
- Law 91/1992 on Italian citizenship (Normattiva)
- Decree-Law 36/2025 as converted by Law 74/2025 (Normattiva)
- USCIS Genealogy Program
- National Archives: naturalization records
This guide is general information, not legal advice. Rules and consulate practice change; check the official sources or ask us before acting.
Questions about ancestor naturalization
Not sure when your ancestor naturalized?
We find the records, compare the dates, and tell you whether your line holds under the current rules.
Check my line →Related guides
Documents
Naturalization Records
Where U.S. naturalization records are kept and how to request them.