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Maria Gonzales — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Contra-Costa-County, California
Our Model Tree links this Maria Gonzales across the 1930 and 1940 US Censuses in Contra-Costa-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Contra-Costa-County, California |
| Surname | Gonzales |
| Given Name | Maria Luz |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Brentwood |
| 1935 Residence (County) | Contra Costa |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Brentwood |
| Est. Birth Year | ~1928 |
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 1940 census.
| Name | Relation to head | Relative to Maria | Age | Birth yr |
|---|---|---|---|---|
| Concepcion Gonzales | Daughter | — | 8 | ~1932 |
| Ricarda Gonzales | Son | — | 10 | ~1930 |
| Antonia Gonzales | Spouse | — | 43 | ~1897 |
| Lidia Gonzales | Daughter | — | 1 | ~1939 |
| Ricardo Gonzales | Head | — | 38 | ~1902 |
| Arturo Gonzales | Son | — | 2 | ~1938 |
| Maria Gonzales | Daughter | — | 12 | ~1928 |
| Alicia Gonzales | Daughter | — | 9 | ~1931 |
| Antonio Gonzales | Son | — | 5 | ~1935 |
Census Appearances
1930
Contra Costa, …
Daughter, age 2
Contra Costa, California · implied b. ~1928 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gonzales |
| Given Name | Maria |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Mexican |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Mexico |
| Mother's Birthplace | Mexico |
| Can Read/Write | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Contra-Costa-County, California
Daughter, age 12
Contra-Costa-County, California · implied b. ~1928 — 9 household members
| Surname | Gonzales |
| Given Name | Maria Luz |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Brentwood |
| 1935 Residence (County) | Contra Costa |
| Highest Grade | No 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 Maria Gonzales across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Maria Gonzales
Daughter · 1940 · age 12 · b. ~1928 · California
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Sibling
Concepcion Gonzales
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Antonio Gonzales
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alicia Gonzales
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arturo Gonzales
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ricarda Gonzales
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lidia Gonzales
Sibling · 1940 · age 1
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 — Contra-Costa-County, California
Open full size
1940 US Federal Census — Contra-Costa-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00197-00266)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Porfidio Castillo | 53 | Head | Laborer | Mexico |
| 2 | Theodora Castillo | 16 | Son | — | California |
| 3 | Porfidio Castillo | 15 | Son | — | Mexico |
| 4 | Guillermo Tafarga | 50 | Head | Laborer | Mexico |
| 5 | Victoria Tafarga | 47 | Wife | Laborer | Mexico |
| 6 | Isidoro Tafarga | 20 | Son | Laborer | Mexico |
| 7 | Concha Tafarga | 16 | Daughter | Packer | Mexico |
| 8 | Francisco Tafarga | 15 | Daughter | — | Arizona |
| 9 | Victoria Tafarga | 9 | Daughter | — | California |
| 10 | Jose Maldonado | 52 | Head | Laborer | Mexico |
| 11 | Concepcion Maldonado | 49 | Wife | Laborer | Mexico |
| 12 | Moses Maldonado | 11 | Son | — | California |
| 13 | Silvestre Funes | 23 | Head | Laborer | Mexico |
| 14 | Maria Funes | 21 | Wife | — | Mexico |
| 15 | Ricardo Gonzales | 38 | Head | Laborer | Mexico |
| 16 | Antonia Gonzales | 43 | Wife | — | Mexico |
| 17 | Maria Luz Gonzales THIS PERSON | 12 | Daughter | — | California |
| 18 | Ricarda Gonzales | 10 | Son | — | California |
| 19 | Alicia Gonzales | 9 | Daughter | — | California |
| 20 | Concepcion Gonzales | 8 | Daughter | — | California |
| 21 | Antonio Gonzales | 5 | Son | — | California |
| 22 | Arturo Gonzales | 2 | Son | — | California |
| 23 | Lidia Gonzales | 1 | Daughter | — | California |
| 24 | Kiichi Hisas | 61 | Head | Laborer | Japan |
| 25 | Iwao Takahashi | 67 | Partner | Laborer | Japan |
| 26 | Mikki Monzawa | 54 | Partner | Laborer | Japan |
| 27 | Shuji Noguchi | 57 | Partner | Laborer | Japan |
| 28 | Henry Kahere | 32 | Head | Ranch Foreman | California |
| 29 | Nell Kahere | 31 | Wife | — | California |
| 30 | Wilda Kahere | 6 | Daughter | — | California |
| 31 | Edward Kahere | 2 | Son | — | California |
| 32 | John Johnson | 22 | Brother | Laborer | Oklahoma |
| 33 | Harry Johnson | 20 | Brother | Laborer | Oklahoma |
| 34 | Paul Johnson | 18 | Brother | Laborer | Oklahoma |
| 35 | Frank Cantrell | 32 | Brother | Driver | Oklahoma |
| 36 | Frank Medina | 48 | Head | Auto Mechanic | California |
| 37 | Elmer Medina | 30 | Wife | — | Nebraska |
| 38 | Lona Sager | 11 | Step Son | — | Nebraska |
| 39 | Martha Sager | 6 | Step Daughter | — | Nebraska |
| 40 | Joseph Mendez | 33 | Head | Bookkeeper | Texas |
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)