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John Rossi — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this John Rossi across the 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 11-person household.
Age 0
b. ~1930
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Rossi |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Additional Details | |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1930 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Rosa Rossi | Daughter | — | 2 | ~1928 |
| Antonio Rossi | Son | — | 16 | ~1914 |
| John Rossi | Son | — | ~1930 | |
| Luigi Rossi | Son | — | 4 | ~1926 |
| Giulia Rossi | Spouse | — | 38 | ~1892 |
| Anna Rossi | Daughter | — | 6 | ~1924 |
| Maria Rossi | Daughter | — | 14 | ~1916 |
| Gino Rossi | Son | — | 12 | ~1918 |
| Dino Rossi | Son | — | 8 | ~1922 |
| Elena Rossi | Daughter | — | 10 | ~1920 |
| Luigi Rossi | Head | — | 42 | ~1888 |
Census Appearances
1930
San Francisco, …
Son, age
San Francisco, California · implied b. ~1930 — 11 household members
| Surname | Rossi |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 11
San-Francisco-County, California · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roza |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links John Rossi across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Rossi
Son · 1930 · age 0 · b. ~1930 · California
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Sibling
Anna Rossi
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dino Rossi
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Antonio Rossi
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elena Rossi
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maria Rossi
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Luigi Rossi
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gino Rossi
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosa Rossi
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — San Francisco, California
Open full size
1930 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel209:0619)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Gomez | 30 | Head | Laborer | Mexico |
| 2 | Mary Gomez | 28 | Wife | — | Mexico |
| 3 | John Jr Gomez | 6 | Son | — | California |
| 4 | Lupe Gomez | 4 | Daughter | — | California |
| 5 | Carmen Gomez | 2 | Daughter | — | California |
| 6 | Jesus Gomez | 0 | Son | — | California |
| 7 | Manuel Lopez | 25 | Lodger | Laborer | Mexico |
| 8 | Jose Garcia | 22 | Lodger | Laborer | Mexico |
| 9 | Louis Baudet | 54 | Head | Cook | France |
| 10 | Marie Baudet | 47 | Wife | — | France |
| 11 | Louis Jr Baudet | 25 | Son | Clerk | California |
| 12 | Alice Baudet | 22 | Daughter | Stenographer | California |
| 13 | Joseph Languine | 52 | Head | Gardener | France |
| 14 | Marie Languine | 48 | Wife | — | France |
| 15 | Joseph Jr Languine | 23 | Son | Mechanic | California |
| 16 | Yvonne Languine | 19 | Daughter | — | California |
| 17 | Antonio Pellegrini | 45 | Head | Baker | Italy |
| 18 | Rosa Pellegrini | 40 | Wife | — | Italy |
| 19 | Gino Pellegrini | 18 | Son | Clerk | California |
| 20 | Maria Pellegrini | 15 | Daughter | — | California |
| 21 | John Pellegrini | 12 | Son | — | California |
| 22 | Anna Pellegrini | 10 | Daughter | — | California |
| 23 | Dino Pellegrini | 8 | Son | — | California |
| 24 | Elena Pellegrini | 6 | Daughter | — | California |
| 25 | Ernest Schmidt | 50 | Head | Carpenter | Germany |
| 26 | Emma Schmidt | 45 | Wife | — | Germany |
| 27 | Ernest Jr Schmidt | 20 | Son | Clerk | California |
| 28 | Hilda Schmidt | 18 | Daughter | Stenographer | California |
| 29 | Otto Schmidt | 15 | Son | — | California |
| 30 | Martha Schmidt | 12 | Daughter | — | California |
| 31 | Patrick O'Brien | 48 | Head | Motorman | Ireland |
| 32 | Mary O'Brien | 45 | Wife | — | Ireland |
| 33 | John O'Brien | 20 | Son | Clerk | California |
| 34 | Thomas O'Brien | 18 | Son | — | California |
| 35 | Margaret O'Brien | 15 | Daughter | — | California |
| 36 | Luigi Rossi | 42 | Head | Laborer | Italy |
| 37 | Giulia Rossi | 38 | Wife | — | Italy |
| 38 | Antonio Rossi | 16 | Son | — | California |
| 39 | Maria Rossi | 14 | Daughter | — | California |
| 40 | Gino Rossi | 12 | Son | — | California |
| 41 | Elena Rossi | 10 | Daughter | — | California |
| 42 | Dino Rossi | 8 | Son | — | California |
| 43 | Anna Rossi | 6 | Daughter | — | California |
| 44 | Luigi Jr Rossi | 4 | Son | — | California |
| 45 | Rosa Rossi | 2 | Daughter | — | California |
| 46 | John Rossi THIS PERSON | 0 | Son | — | California |
| 47 | Ah Wong | 55 | Head | Merchant | China |
| 48 | Suey Wong | 48 | Wife | — | China |
| 49 | George Wong | 18 | Son | Clerk | California |
| 50 | Mary Wong | 16 | Daughter | — | California |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)