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In depth
A certificato storico (historical certificate) is an Italian document issued by the anagrafe that shows a person's complete civil status history, including birth, marriage(s), citizenship status, naturalization events, and residence history.
For CBD cases, the certificato storico of the anchor ancestor is critical evidence — it shows whether the ancestor naturalized abroad (which would break the chain) or remained an Italian citizen throughout their life.
If the ancestor's anagrafe record shows no naturalization, this is prima facie evidence that they never naturalized. However, consulates often require additional documentation (e.g., a USCIS no-record letter for US residents) to confirm.
Related terms
The anagrafe is the Italian civil registry office that maintains records of residents, births, marriages, and deaths in each Italian commune (municipality).
An atto di nascita is an Italian birth certificate, retrieved from the anagrafe (civil registry) of the commune where the person was born.
The citizenship chain is the unbroken line of citizenship transmission from an ancestor to the applicant, which must be proven to claim citizenship by descent.
Jure sanguinis (Italian for 'right of blood') is the Italian citizenship-by-descent regime, which has no generational limit and is the most accessible CBD regime in Europe.
A 1948 case is a judicial petition for Italian citizenship filed in the civil court of Rome, available to descendants of Italian women who gave birth before January 1, 1948.
Stato civile (civil status) refers to the Italian system of civil registration of births, marriages, and deaths, maintained by the anagrafe in each commune.