MS
Mary Souza — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Merced-County, California
Our Model Tree links this Mary Souza across the 1930 and 1940 US Censuses in Merced-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 13-person household.
Age 19
b. ~1921
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Merced-County, California |
| Surname | Souza |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | T.W.P. 1 |
| 1935 Residence (County) | Merced |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Twp 1 |
| Est. Birth Year | ~1921 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Olive Souza | Daughter | — | 13 | ~1927 |
| Earl Souza | Head | — | 47 | ~1893 |
| Gertrude Souza | Daughter | — | 11 | ~1929 |
| John Miranda | Other | — | 48 | ~1892 |
| Lorraine Souza | Daughter | — | 3 | ~1937 |
| Tony Dias | Other | — | 31 | ~1909 |
| George Souza | Son | — | 4 | ~1936 |
| Mary Souza | Daughter | — | 19 | ~1921 |
| Emily Souza | Daughter | — | 17 | ~1923 |
| Mary Souza | Spouse | — | 34 | ~1906 |
| Joe Gonzales | Other | — | 33 | ~1907 |
| Cecelia Souza | Daughter | — | 11 | ~1929 |
| Earl Souza | Son | — | 15 | ~1925 |
Census Appearances
1930
Stanislaus, California
Daughter, age 9
Stanislaus, California · implied b. ~1921 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Souza |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Portugal |
| Mother's Birthplace | California |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Merced-County, California
Daughter, age 19
Merced-County, California · implied b. ~1921 — 13 household members
| Surname | Souza |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | T.W.P. 1 |
| 1935 Residence (County) | Merced |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | California |
| 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 Souza across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Souza
Daughter · 1940 · age 19 · b. ~1921 · California
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Sibling
Lorraine Souza
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecelia Souza
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earl Souza
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emily Souza
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Olive Souza
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Souza
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Souza
Sibling · 1940 · age 4
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
1940 US Federal Census — Merced-County, California
Open full size
1940 US Federal Census — Merced-County, California
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00264-00021)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 2 | Earl Souza | 47 | Head | Dairyman | Azores |
| 3 | Mary Souza | 34 | Wife | — | Azores |
| 4 | Mary Souza THIS PERSON | 19 | Daughter | — | California |
| 5 | Emily Souza | 17 | Daughter | — | California |
| 6 | Earl Souza | 15 | Son | Laborer | California |
| 7 | Olive Souza | 13 | Daughter | — | California |
| 8 | Cecelia Souza | 11 | Daughter | — | California |
| 9 | Gertrude Souza | 11 | Daughter | — | California |
| 10 | George Souza | 4 | Son | — | California |
| 11 | Lorraine Souza | 3 | Daughter | — | California |
| 12 | Joe Gonzales | 33 | Partner | Dairyman | California |
| 13 | Tony Dias | 31 | Hired man | Laborer | Massachusetts |
| 14 | John Miranda | 48 | Hired man | Laborer | Azores |
| 15 | Joe S. Perry | 73 | Head | Dairyman | Portugal |
| 16 | Laura Perry | 56 | Wife | — | California |
| 17 | Walter Perry | 18 | Son | Laborer | California |
| 18 | Eleanor Perry | 14 | Daughter | — | California |
| 19 | Earl Perry | 11 | Son | — | California |
| 20 | Shirley Ann Perry | 1 | Daughter | — | California |
| 21 | Joe Rocha | 39 | Head | Dairyman | Azores |
| 22 | Carrie Rocha | 32 | Wife | — | California |
| 23 | Joe Rocha | 12 | Son | — | California |
| 24 | Annie Rocha | 7 | Daughter | — | California |
| 25 | George Rocha | 4 | Son | — | California |
| 26 | Manuel Santos | 48 | Head | Dairyman | Azores |
| 27 | Louisa Santos | 37 | Wife | — | Azores |
| 28 | Manuel Santos | 16 | Son | — | California |
| 29 | Eddie Santos | 14 | Son | — | California |
| 30 | Georgia Santos | 11 | Daughter | — | California |
| 31 | Claude Santos | 7 | Son | — | California |
| 32 | Mary Santos | 4 | Daughter | — | California |
| 33 | Joe Leonardo | 49 | Head | Dairyman | Portugal |
| 34 | Josephine Leonardo | 39 | Wife | — | Azores |
| 35 | Josephine Leonardo | 21 | Daughter | — | California |
| 36 | Joe Leonardo | 19 | Son | Laborer | California |
| 37 | Paul Leonardo | 14 | Son | Laborer | California |
| 38 | Frances Leonardo | 5 | Daughter | — | California |
| 39 | Frank Leonardo | 2 | Son | — | California |
| 40 | Roland F. Keel | 33 | Head | Oiler | California |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)