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Manuel Martinez — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Manuel Martinez across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents John & Louis — first a son (b.~1911), then head of a 5-person household.
Age 29
b. ~1911
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Martinez |
| Given Name | Manuel |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | El Monte Township |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 675 |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Farmer |
| Township / Ward | El Monte Township |
| Est. Birth Year | ~1911 |
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 1940 census.
| Name | Relation to head | Relative to Manuel | Age | Birth yr |
|---|---|---|---|---|
| Lucia Martinez | Spouse | — | 56 | ~1884 |
| Angelita Martinez | Daughter | — | 20 | ~1920 |
| Isabel Martinez | Daughter | — | 24 | ~1916 |
| Manuel Martinez | Son | — | 29 | ~1911 |
| Matilda Martinez | Head | — | 59 | ~1881 |
Census Appearances
1920
Los Angeles, …
Son, age 8
Los Angeles, California · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Manuel |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Mexico |
| Mother's Birthplace | Texas |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Spanish |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Los Angeles, …
Son, age 18
Los Angeles, California · implied b. ~1912 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Manuel |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Mexican |
| Age | 18 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Arizona |
| Mother's Birthplace | California |
| Occupation | Salesman |
| Industry | Vegetable Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 29
Los-Angeles-County, California · implied b. ~1911 — 5 household members
| Surname | Martinez |
| Given Name | Manuel |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | El Monte Township |
| 1935 Residence (County) | Los Angeles |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 675 |
| Highest Grade | No 6 |
| 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 Manuel Martinez across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Martinez (~0.92 confidence) and father Louis Martinez (~0.92 confidence) and mother Catalina Martinez (~0.92 confidence) and mother Lucia Martinez (~0.92 confidence) and mother Maria Martinez (~0.92 confidence) and mother Matilda Martinez (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Martinez
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Louis Martinez
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Catalina Martinez
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Lucia Martinez
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Maria Martinez
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Matilda Martinez
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Manuel Martinez
Son · 1940 · age 29 · b. ~1911 · California
★ You are viewing this record
Sibling
Angelita Martinez
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabel Martinez
Sibling · 1940 · age 24
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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00228-00210)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry Silvas | 36 | Step-son | Laborer | Mexico |
| 2 | Andrea Leon | 42 | Head | Laborer | Mexico |
| 3 | Maria Leon | 31 | Wife | — | Mexico |
| 4 | Juan Hernandez | 56 | Head | Laborer | Mexico |
| 5 | Antonia Hernandez | 45 | Wife | — | Mexico |
| 6 | Luis Balderas | 55 | Head | Laborer | Mexico |
| 7 | Meda Balderas | 40 | Wife | — | Mexico |
| 8 | Jose Balderas | 15 | Son | — | California |
| 9 | Jose Reyes | 6 | Cousin | — | California |
| 10 | Ignacio Gutierrez | 51 | Head | Owner Salesman | Mexico |
| 11 | Jennie Gutierrez | 43 | Wife | Salesman | Mexico |
| 12 | Ignacio Jr Gutierrez | 23 | Son | Salesman | California |
| 13 | Manuel Gutierrez | 22 | Son | Salesman | California |
| 14 | Eva Gutierrez | 19 | Daughter | Salesman | California |
| 15 | Catalina Gutierrez | 17 | Daughter | — | California |
| 16 | Alberto Gutierrez | 15 | Son | — | California |
| 17 | Esperanza Gutierrez | 13 | Daughter | — | California |
| 18 | Frank Gutierrez | 11 | Son | — | California |
| 19 | Consuelo Gutierrez | 8 | Daughter | — | California |
| 20 | Ernest Gutierrez | 6 | Son | — | California |
| 21 | Maria H Gutierrez | 4 | Daughter | — | California |
| 22 | Louis Alvarez | 58 | Head | — | Mexico |
| 23 | Trinidad Alvarez | 44 | Wife | — | Mexico |
| 24 | Dolores Alvarez | 31 | Daughter | Laborer | Mexico |
| 25 | Louis Jr Alvarez | 18 | Son | — | Mexico |
| 26 | Ruth Alvarez | 15 | Daughter | — | California |
| 27 | Juan Alvarez | 12 | Son | — | California |
| 28 | Edward Alvarez | 10 | Son | — | California |
| 29 | Octavio Alvarez | 22 | Son | Laborer | Mexico |
| 30 | Carrie Alvarez | 17 | Daughter-in-law | — | California |
| 31 | Herculano Hernandez | 59 | Head | — | Mexico |
| 32 | Maria Hernandez | 58 | Wife | — | Mexico |
| 33 | Sal Hernandez | 28 | Son | Bookkeeper | California |
| 34 | Aurora Hernandez | 25 | Daughter | Seamstress | California |
| 35 | Lupe Hernandez | 21 | Daughter | Sorter | California |
| 36 | Matilda Martinez | 59 | Head | — | Mexico |
| 37 | Lucia Martinez | 56 | Wife | — | Mexico |
| 38 | Manuel Martinez THIS PERSON | 29 | Son | Farmer | California |
| 39 | Isabel Martinez | 24 | Daughter | Creaser | California |
| 40 | Angelita Martinez | 20 | Daughter | — | California |
Pedigree Summary
Manuel + 2 siblings
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)