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James Simpson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this James Simpson across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 3-person household.
Age 65
b. ~1875
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Simpson |
| Given Name | James G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1875 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| James Simpson | Head | — | 65 | ~1875 |
| Alastair Simpson | Son | — | 24 | ~1916 |
| Sadie Simpson | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Los Angeles, …
Head, age 49
Los Angeles, California · implied b. ~1871 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1910 |
| Naturalization Status | Alien |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Cabinet Maker |
| Industry | Furniture Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Los Angeles, …
Head, age 58
Los Angeles, California · implied b. ~1872 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | First papers filed |
| Year of Immigration | 1918 |
| Age at First Marriage | 35 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Painter |
| Industry | Newspaper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Radio Set | R |
| Veteran | Yes |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Los-Angeles-County, California
Head, age 65
Los-Angeles-County, California · implied b. ~1875 — 3 household members
| Surname | Simpson |
| Given Name | James G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Naturalization Status | Naturalized |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 James Simpson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Simpson
Head · 1940 · age 65 · b. ~1875 · California
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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-t0627-00407-00066)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | A. C. Young | 42 | Head | Merchant | Iowa |
| 2 | Mary A. Young | 45 | Wife | — | Illinois |
| 3 | Mary Jane Young | 15 | Daughter | — | Illinois |
| 4 | William B. Taylor | 66 | Head | Bookkeeper | Scotland |
| 5 | Margaret B. Taylor | 64 | Wife | — | Scotland |
| 6 | Charles A. Patterson | 70 | Head | — | Iowa |
| 7 | C. Mabel Patterson | 70 | Wife | — | Iowa |
| 8 | Floyd A. Bartlett | 46 | Head | Teacher And Musician | Kansas |
| 9 | Nina Bartlett | 36 | Wife | — | Kansas |
| 10 | Ora Grace Bartlett | 19 | Daughter | — | Kansas |
| 11 | Benny Bartlett | 13 | Son | — | Kansas |
| 12 | Connie Bartlett | 9 | Daughter | — | Missouri |
| 13 | L. S. Parslow | 56 | Head | Investigator | New York |
| 14 | Birdie M. Parslow | 54 | Wife | — | Illinois |
| 15 | James C. Parslow | 19 | Son | Clerk | Iowa |
| 16 | Patricia Parslow | 16 | Daughter | — | California |
| 17 | Richard N. Parslow | 13 | Son | Recreation Supervisor | Michigan |
| 18 | Evelyn J. Parslow | 24 | Daughter | — | California |
| 19 | Richard Jr. Parslow | 5 | Grandson | — | California |
| 20 | Philip L. Parslow | 3 | Grandson | — | California |
| 21 | Carolyn J. Parslow | 1 | Granddaughter | — | California |
| 22 | (This Ends Block 143 And Begins Block 144) | None | — | — | — |
| 23 | Alice R. Schofield | 61 | Head | — | Pennsylvania |
| 24 | Alice R. Schofield | 24 | Daughter | Assignment Clerk | Pennsylvania |
| 25 | Leon Benzenhoefer | 28 | Lodger | Clerk | Pennsylvania |
| 26 | James L. Halmstad | 71 | Head | — | Ohio |
| 27 | Hanna S. Halmstad | 58 | Wife | — | Iowa |
| 28 | James G. Simpson THIS PERSON | 65 | Head | — | Scotland |
| 29 | Sadie S. Simpson | 61 | Wife | — | Canada English |
| 30 | Alastair G. Simpson | 24 | Son | Radio Technician | Canada English |
| 31 | Samuel G. Helder | 82 | Head | — | Ohio |
| 32 | Emma S. Helder | 76 | Wife | — | Ohio |
| 33 | Lewis R. Thomas | 55 | Head | Tailor | Wales |
| 34 | Leona Thomas | 48 | Wife | Assistant | England |
| 35 | David Thomas | 21 | Son | Lithographer | Utah |
| 36 | Hugh Thomas | 11 | Son | — | California |
| 37 | John D. Smith | 56 | Head | Secretary | Indiana |
| 38 | Edith Smith | 53 | Wife | — | Illinois |
| 39 | Mary Jane Smith | 21 | Daughter | Clerk | Illinois |
| 40 | Lloyd Lillywhite | 30 | Head | Proprietor | Utah |
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)