Here the honest answer is more complicated than the guidebooks suggest, and it matters.
The community of Ferrara is continuous. Its own historical archive largely is not. The Fascist confiscation and destruction of communal property in 1943–45 broke the record; what the community holds today is mostly the documentation of that rupture and its aftermath: the confiscation files (1883–1949), the reconstitution of communal property (1945–55), and the surviving records of charitable and educational institutions, including the absorbed archive of the suppressed community of Lugo di Romagna.
The genealogically usable material is elsewhere, and there is a great deal of it:
- Archivio Storico Comunale di Ferrara — the 1812 population roll with house-and-family sheets, population registers and individual cards for roughly 1861–1900, the censuses of 1936 and 1951, registers of Jewish burials in the municipal cemetery from the eighteenth to the early twentieth century, and the 1938 census of the Jewish population: seven boxes and two registers compiled by municipal clerks, naming the city's Jews at the moment the state decided to count them.
- Archivio di Stato di Ferrara — the Notarile antico for notarial acts, the Cessato catasto urbano for property, and the Questura and Prefettura files for the persecution years.
- Civil registration from 1866 onward through the comune, and pre-unification status records under papal administration.
- The cemetery on Via delle Vigne, in continuous use since the seventeenth century, where stones from earlier burial grounds also ended up built into the column of Borso d'Este at the Volto del Cavallo by the cathedral.
A Ferrarese line can usually be carried back through the nineteenth century on civil and municipal records alone, and often further through notarial and cadastral material. What it takes is knowing which building holds what and reading the Italian.