MR
Mary Rossi — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Joaquin, California
Our Model Tree links this Mary Rossi across the 1930 and 1940 US Censuses in San Joaquin, California (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 9-person household.
Age 8
b. ~1922
Female
Daughter
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Joaquin, California |
| Surname | Rossi |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Additional Details | |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Oneil Township |
| Est. Birth Year | ~1922 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edith Rossi | Daughter | — | 7 | ~1923 |
| John Rossi | Son | — | 11 | ~1919 |
| Josephine Rossi | Daughter | — | 2 | ~1928 |
| Marion Rossi | Son | — | 4 | ~1926 |
| John Rossi | Head | — | 43 | ~1887 |
| Mary Rossi | Daughter | — | 8 | ~1922 |
| John Rossi | Son | — | 15 | ~1915 |
| Lucille Rossi | Daughter | — | ~1930 | |
| Marguerita Rossi | Spouse | — | 40 | ~1890 |
Census Appearances
1930
San Joaquin, …
Daughter, age 8
San Joaquin, California · implied b. ~1922 — 9 household members
| Surname | Rossi |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Joaquin-County, California
Daughter, age 18
San-Joaquin-County, California · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Rosa |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Castoria Township |
| 1935 Residence (County) | San Joaquin |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 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 8 · b. ~1922 · California
★ You are viewing this record
Sibling
Edith Rossi
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Rossi
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Rossi
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Rossi
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Rossi
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Rossi
Sibling · 1930 · age 11
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 Joaquin, California
Open full size
1930 US Federal Census — San Joaquin, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel212:0564)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Lily | 12 | Daughter | None | California |
| 52 | Janet | 13 | Step daughter | None | California |
| 53 | Kiyoshiro | 58 | Foster father | Farmer | Japan |
| 54 | Sho | 57 | Foster mother | None | Japan |
| 55 | Sato Tokugoro | 55 | Hired man | Farmer | Japan |
| 56 | M Tanaka | 36 | Head | Farmer | California |
| 57 | Kusaka Tanaka | 24 | Wife | None | Japan |
| 58 | John Tanaka | 6 | Son | None | California |
| 59 | M Tanaka | 5 | Son | None | California |
| 60 | Mitsuru Tanaka | 4 | Son | None | California |
| 61 | Satoru Tanaka | 3 | Son | None | California |
| 62 | Chis Caszarella | 45 | Hired man | Farmer | Japan |
| 63 | John Rossi | 43 | Head | Farmer | Italy |
| 64 | Marguerita Rossi | 40 | Wife | None | Italy |
| 65 | John Rossi | 15 | Son | None | Italy |
| 66 | John Rossi | 11 | Son | None | California |
| 67 | Mary Rossi THIS PERSON | 8 | Daughter | None | California |
| 68 | Edith Rossi | 7 | Daughter | None | California |
| 69 | Marion Rossi | 4 | Son | None | California |
| 70 | Josephine Rossi | 2 | Daughter | None | California |
| 71 | Lucille Rossi | 0 | Daughter | None | California |
| 72 | Harry Taylor | 49 | Head | Dairy Man | Ohio |
| 73 | Maude Taylor | 34 | Wife | Practical Nurse | California |
| 74 | Maude Taylor | 1 | Daughter | None | California |
| 75 | Tony Castellana | 35 | Head | Truck Driver | California |
| 76 | Helen Castellana | 30 | Wife | None | Oklahoma |
| 77 | Mary F. Castellana | 8 | Daughter | None | California |
| 78 | Joy M. Castellana | 5 | Daughter | None | California |
| 79 | Thomas N. Powell | 54 | Head | None | California |
| 80 | Giambattista Basso | 57 | Head | Farmer | Italy |
| 81 | Rosa Basso | 23 | Wife | None | Italy |
| 82 | Louis Fontanella | 45 | Hired man | None | Italy |
| 83 | Sadao Mizokami | 43 | Head | Farmer | Japan |
| 84 | K Mizokami | 44 | Wife | None | Japan |
| 85 | S Mizokami | 9 | Daughter | None | California |
| 86 | T Mizokami | 7 | Son | None | California |
| 87 | F Mizokami | 1 | Son | None | California |
| 88 | Machado Graciosa | 33 | Hired man | Farmer | Philippine Island |
| 89 | Ray G. Snyder | 52 | Head | Farmer | California |
| 90 | Alice C. Snyder | 52 | Wife | Cook | California |
| 91 | Roy O. Roark | 48 | Boarder | Laborer | Oregon |
| 92 | Joseph E. Hudson | 42 | Boarder | Laborer | Nebraska |
| 93 | Henry E. John | 47 | Boarder | Laborer | Minnesota |
| 94 | James Campbell | 76 | Boarder | Laborer | Pennsylvania |
| 95 | Ernest G. Jackson | 73 | Head | None | Massachusetts |
| 96 | Ethel Upson | 30 | Servant | Servant | England |
| 97 | Edith Lee | 33 | Servant | Servant | England |
| 98 | Eugene L. Wilhoit | 62 | Head | Banker | California |
| 99 | Jessie S. Wilhoit | 53 | Wife | None | California |
| 100 | — | None | — | — | — |
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)