RC
Robert Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Robert Campbell across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents James & Perry — first a head (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Campbell |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | County |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Manager |
| Industry | Lumber Co |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 1300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Manager |
| Township / Ward | County |
| Est. Birth Year | ~1914 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Beverly Campbell | Daughter | — | 5 | ~1935 |
| Robert Campbell | Head | — | 26 | ~1914 |
| Thelma Campbell | Spouse | — | 22 | ~1918 |
Census Appearances
1920
Los Angeles, …
Son, age 5
Los Angeles, California · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Student |
| Industry | School |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Los Angeles, …
Son, age 15
Los Angeles, California · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Robert G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Colorado |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Los-Angeles-County, California
Head, age 26
Los-Angeles-County, California · implied b. ~1914 — 3 household members
| Surname | Campbell |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | County |
| 1935 Residence (County) | Los Angeles |
| Occupation | Manager |
| Industry | Lumber Co |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 1300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Robert Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Campbell (~0.92 confidence) and father Perry Campbell (~0.92 confidence) and mother Ada Campbell (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Campbell
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Perry Campbell
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Ada Campbell
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Campbell
Head · 1940 · age 26 · b. ~1914 · 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
34 people indexed on this census page (nara:1940:m-t0627-00236-00990)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Campbell THIS PERSON | 26 | Head | Manager | Colorado |
| 2 | Thelma Campbell | 22 | Wife | — | California |
| 3 | Beverly Campbell | 5 | Daughter | — | California |
| 4 | George Comstock | 42 | Head | Gunnite Operator | California |
| 5 | Ida Comstock | 35 | Wife | — | Missouri |
| 6 | Dorothy Comstock | 18 | Daughter | — | California |
| 7 | Edna May Comstock | 14 | Daughter | — | California |
| 8 | Harold Burgess | 50 | Head | — | Illinois |
| 9 | Florence Burgess | 71 | Mother | — | Illinois |
| 10 | Carrie Parker | 64 | Lodger | — | Michigan |
| 11 | Kenneth Fritsch | 35 | Head | Tool Maker | Michigan |
| 12 | Dorothy Fritsch | 35 | Wife | — | Michigan |
| 13 | Kenneth Fritsch | 17 | Son | — | Michigan |
| 14 | Robert Fritsch | 16 | Son | — | Michigan |
| 15 | Richard Fritsch | 14 | Son | — | Michigan |
| 16 | Frank Fritsch | 13 | Son | — | Michigan |
| 17 | Gerald Fritsch | 9 | Son | — | Michigan |
| 18 | Loretta Fritsch | 3 | Daughter | — | Michigan |
| 19 | Kenneth Bangsater | 33 | Brother | Polisher | Michigan |
| 20 | Kenneth Bangsater | 14 | Son | — | Michigan |
| 21 | Wayland Morrison | 25 | Head | Ex-Pressman Former | California |
| 22 | Thelma Morrison | 27 | Wife | — | California |
| 23 | Arleen Morrison | 5 | Daughter | — | California |
| 24 | Norane Morrison | 3 | Daughter | — | California |
| 25 | Raymond Allen | 43 | Head | Constructor | New Jersey |
| 26 | Francis Allen | 47 | Wife | — | Missouri |
| 27 | Roland Hiels | 28 | Head | Receiver Clerk | Missouri |
| 28 | Delia Hiels | 28 | Wife | — | Oklahoma |
| 29 | Loretta Hiels | 3 | Daughter | — | California |
| 30 | Lorenie Hiels | 1 | Daughter | — | California |
| 31 | Albert Walter | 40 | Head | Machinist | Germany |
| 32 | Clara Walter | 39 | Wife | — | Germany |
| 33 | Arnold Walter | 13 | Son | — | Germany |
| 34 | Margit Walter | 9 | Daughter | — | California |
Pedigree Summary
Robert
Gen 1 · 3 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)