RM
Richard Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Richard Martin across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Blas & Guadalupe — first a son (b.~1918), then head of a 3-person household.
Age 22
b. ~1918
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Martin |
| Given Name | Richard L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Riveter |
| Industry | Aircraft |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Riveter |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1918 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Richard | Age | Birth yr |
|---|---|---|---|---|
| Maud Martin | Head | — | 51 | ~1889 |
| Eric Johnson | Other | — | 57 | ~1883 |
| Richard Martin | Son | — | 22 | ~1918 |
Census Appearances
1920
Los Angeles, …
Son, age 3
Los Angeles, California · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Ricardo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Mexico |
| Mother's Birthplace | Mexico |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Los Angeles, …
Son, age 13
Los Angeles, California · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Ricardo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Mexican |
| Age | 13 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Mexico |
| Mother's Birthplace | Mexico |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 22
Los-Angeles-County, California · implied b. ~1918 — 3 household members
| Surname | Martin |
| Given Name | Richard L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Occupation | Riveter |
| Industry | Aircraft |
| Class of Worker | PW |
| Income (1939) | 0 |
| 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 Richard Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Blas Martinez (~0.92 confidence) and mother Guadalupe Martinez (~0.92 confidence) and father Elias Martinez (~0.92 confidence) and mother Maud Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Blas Martinez
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Guadalupe Martinez
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Elias Martinez
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Maud Martin
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Richard Martin
Son · 1940 · age 22 · b. ~1918 · California
★ You are viewing this record
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
39 people indexed on this census page (nara:1940:m-t0627-00418-00319)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Dundeen | 57 | Head | Clerk | Illinois |
| 42 | Blanche J. Dundeen | 57 | Wife | — | Illinois |
| 43 | Thomas E. Conley | 31 | Head | Laborer | Missouri |
| 44 | Louise M. Conley | 26 | Wife | — | Missouri |
| 45 | William J. Reeves | 66 | Head | Lithograph Finisher | England |
| 46 | Vinnie E. Reeves | 61 | Wife | — | Italy |
| 47 | J. Edward Rodman | 32 | Head | Salesman | California |
| 48 | Rhoda A. Rodman | 31 | Wife | — | Minnesota |
| 49 | Cecelia R. Rodman | 9 | Daughter | — | California |
| 50 | Kathleen Rodman | 5 | Daughter | — | California |
| 51 | Joan Rodman | 3 | Daughter | — | California |
| 52 | Dona L. Rodman | 1 | Daughter | — | California |
| 53 | Grace V. Clayton | 63 | Head | — | Michigan |
| 54 | Florence J. Green | 28 | Daughter | — | California |
| 55 | Richard C. Green | 7 | Grandson | — | California |
| 56 | Marion C. Green | 5 | Granddaughter | — | California |
| 57 | Robert B. Powell | 28 | Head | Sheet Metal Foreman | Missouri |
| 58 | Dorothy G. Powell | 25 | Wife | Bookkeeper | California |
| 59 | Maud E. Martin | 51 | Head | Housework | Missouri |
| 60 | Richard L. Martin THIS PERSON | 22 | Son | Riveter | California |
| 61 | Eric Johnson | 57 | Lodger | Shoemaker | Sweden |
| 62 | George L. King | 22 | Head | Truck Driver | Minnesota |
| 63 | Ruth L. King | 21 | Wife | — | California |
| 64 | Robert E. King | 1 | Son | — | California |
| 65 | Mattson Morrill | 67 | Head | — | Iowa |
| 66 | Harlow F. King | 36 | Head | Truck Mechanic | Kansas |
| 67 | Margaret J. King | 32 | Wife | — | Oregon |
| 68 | Harlow F. Jr. King | 12 | Son | — | California |
| 69 | Patricia G. King | 11 | Daughter | — | California |
| 70 | Frances E. King | 9 | Daughter | — | Oregon |
| 71 | Jane K. King | 7 | Daughter | — | Oregon |
| 72 | Michael J. King | 2 | Son | — | California |
| 73 | Mary M. King | 2 | Daughter | — | California |
| 74 | Nodge E. Cline | 37 | Head | Clerk | Ohio |
| 75 | Mabel E. Cline | 36 | Wife | — | West Virginia |
| 76 | Patricia M. Cline | 16 | Daughter | — | West Virginia |
| 77 | Erwin B. Cline | 15 | Son | — | West Virginia |
| 78 | Wallace E. Cline | 13 | Son | — | West Virginia |
| 79 | Winston A. Cline | 13 | Son | — | West Virginia |
Pedigree Summary
Richard
Gen 1 · 4 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)