Cognome

Alonzi

The strongest concentration of Alonzi in US arrival records points to Lazio, with 10 of 14 arrivals (71 percent) originating there.

14

US arrivals
1830 to 1912

9

Comuni of
origin

3

Regioni
represented

1

Notable on
Wikipedia

Arrivals by regioneN = 14
Abruzzo: 2 arrivalsLazio: 10 arrivalsSicilia: 2 arrivals

Top regione

Lazio

10 of 14
71 percent of arrivals

Arrivals
0
1
2
3 to 5
6+

Cittadinanza per discendenza

Could your Alonzi line qualify for Italian citizenship?

The largest share of Alonzi arrivals came from Lazio, most often from the provincia of Frosinone. If one of them is your ancestor, Italy may recognize you as a citizen under jure sanguinis (citizenship by descent).

The surname alone does not decide it. Each generation between that ancestor and you does: who naturalized, and when. Since the 2025 law, the number of generations matters too.

The checker goes back through your line one generation at a time. It is not legal advice, and it does not search for records.

Check your line
Your lineYou fill this in

Italian-born ancestor

A Alonzi from Lazio

Most often from Frosinone (FR)

Each generation between

Name and dates

Did this person naturalize before their child was born?

You

A likely outcome

and the documents your line would need

Not ready to start? Get an email when the citizenship rules change.

Persone notevoli

Notable Alonzi on Wikipedia

Varianti grafiche

Spelling variants worth checking

  • The spelling you know may not be the one in the records. For example, a family remembers Mansini, but the records read Mancini.
  • If your spelling does not appear, a close variant in the list below may be the same family.

Related guide

Myths About Name Changes at Ellis Island

Names were never changed at the border. The spelling here is the original Italian: Giovinelli in the records, perhaps Jovanelli in the family today.

Read guide

Alonzo

30 US arrivals

Alonze

3 US arrivals

Palonzi

1 US arrivals

D alonzo

64 US arrivals

D'alonzo

19 US arrivals

Variants are surfaced from the surname index, not from per-name research. None of these is guaranteed to be the same family as Alonzi.

Origini per comune

Arrival records by comune

Each row is a comune (municipality) where at least one passenger named Alonzi was recorded between 1830 and 1912.