MR
Mary Rossi — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Los Angeles, California
Our Model Tree links this Mary Rossi across the 1930 and 1940 US Censuses in Los Angeles, California (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 5-person household.
Age 4
b. ~1926
Female
Daughter
Born: Texas
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Los Angeles, California |
| Surname | Rossi |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Additional Details | |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1926 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Rossi | Daughter | — | 4 | ~1926 |
| John Rossi | Son | — | 13 | ~1917 |
| Anita Rossi | Spouse | — | 27 | ~1903 |
| Tony Rossi | Head | — | 38 | ~1892 |
| Rose Rossi | Daughter | — | 11 | ~1919 |
Census Appearances
1930
Los Angeles, …
Daughter, age 4
Los Angeles, California · implied b. ~1926 — 5 household members
| Surname | Rossi |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Los-Angeles-County, California
Other, age 15
Los-Angeles-County, California · implied b. ~1925 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Rosas |
| Given Name | Mary |
| Relationship to Head | Niece |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | LOS ANGELES CITY |
| Highest Grade | Yes 8 |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 Mary Rossi across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Rossi
Daughter · 1930 · age 4 · b. ~1926 · California
★ You are viewing this record
Sibling
Rose Rossi
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Rossi
Sibling · 1930 · age 13
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 — Los Angeles, California
Open full size
1930 US Federal Census — Los Angeles, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel162:0886)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry Brunner | 40 | Head | Floor Cutter | New Jersey |
| 2 | Hazel Brunner | 32 | Wife | — | California |
| 3 | Jack Brunner | 12 | Son | — | California |
| 4 | Robert Brunner | 10 | Son | — | California |
| 5 | Eva Brunner | 8 | Daughter | — | California |
| 6 | Charles Pucci | 29 | Head | Driver | California |
| 7 | Lucy Pucci | 27 | Wife | Press Machine | Italy |
| 8 | Tony Rossi | 38 | Head | Merchant | Italy |
| 9 | Anita Rossi | 27 | Wife | — | Italy |
| 10 | John Rossi | 13 | Son | Bus Boy | Italy |
| 11 | Rose Rossi | 11 | Daughter | Folder | Italy |
| 12 | Mary Rossi THIS PERSON | 4 | Daughter | — | Texas |
| 13 | Jose Burres | 30 | Head | Labour | New Mexico |
| 14 | Lucas Costa | 27 | Lodger | Labour | Mexico |
| 15 | Angelina Ramirez | 37 | Head | Labour | California |
| 16 | Margaret Ramirez | 11 | Daughter | — | California |
| 17 | James Norton | 51 | Head | — | Ireland N. |
| 18 | Jose Lopez | 32 | Head | Labour | Mexico |
| 19 | Maria Lopez | 30 | Wife | — | Mexico |
| 20 | Jose Lopez | 11 | Son | Yes | Mexico |
| 21 | Lupe Lopez | 9 | Daughter | Yes | Mexico |
| 22 | Angelita Lopez | 7 | Daughter | Yes | Mexico |
| 23 | Jose Lopez | 34 | Head | Butcher | Mexico |
| 24 | Josephine Lopez | 30 | Wife | — | Mexico |
| 25 | Josephine Lopez | 12 | Daughter | Yes | Mexico |
| 26 | Mary Lopez | 11 | Daughter | Yes | Mexico |
| 27 | Lupe Lopez | 9 | Daughter | Yes | Mexico |
| 28 | John Lopez | 7 | Son | Yes | Mexico |
| 29 | Frank Lopez | 5 | Son | — | Mexico |
| 30 | Jesus Lopez | 30 | Head | Labour | Mexico |
| 31 | Adelaida Lopez | 25 | Wife | Waitress | Mexico |
| 32 | Jesus Lopez | 4 | Son | — | California |
| 33 | Antonio Lopez | 2 | Son | — | California |
| 34 | Lupe Lopez | 0 | Daughter | — | California |
| 35 | Juliano Chavez | 25 | Boarder | No | Mexico |
| 36 | Dora Barelo | 18 | Daughter | — | New Mexico |
| 37 | Arsenio Martinez | 42 | Head | Labour | Mexico |
| 38 | Rosario Martinez | 37 | Wife | — | Mexico |
| 39 | Louis Martinez | 11 | Son | — | California |
| 40 | Fred Lawry | 41 | Head | Clerk | Oregon |
| 41 | Edna Lawry | 36 | Wife | Yes | Arizona |
| 42 | Emma Lawry | 13 | Daughter | Yes | Arizona |
| 43 | Edward Lawry | 11 | Son | Yes | Arizona |
| 44 | Fred Jr. Lawry | 10 | Son | Yes | Arizona |
| 45 | Ernest Lawry | 8 | Son | Yes | Arizona |
| 46 | Sol Cooper | 42 | Head | Coppersmith | Massachusetts |
| 47 | Rebecca Cooper | 45 | Wife | — | Georgia |
| 48 | Yvonne Cooper | 14 | Daughter | — | Rhode Island |
| 49 | Ruby Cooper | 7 | Daughter | — | Rhode Island |
| 50 | Roy Cooper | 3 | Son | — | Michigan |
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)