RA
Robert Alexander — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Robert Alexander across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Alexander |
| Given Name | Robert W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | messenger |
| Industry | aeroplane factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 972 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Messenger |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1919 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| William Alexander | Head | — | 57 | ~1883 |
| Selma Stine | Other | — | 77 | ~1863 |
| Robert Alexander | Son | — | 21 | ~1919 |
| Florabelle Alexander | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Los Angeles, …
Son, age
Los Angeles, California · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Robert D |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Texas |
| Mother's Birthplace | Wyoming |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Los Angeles, …
Son, age 11
Los Angeles, California · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Robert H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Texas |
| Mother's Birthplace | Wyoming |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 21
Los-Angeles-County, California · implied b. ~1919 — 4 household members
| Surname | Alexander |
| Given Name | Robert W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Occupation | messenger |
| Industry | aeroplane factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 972 |
| Highest Grade | H-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 Robert Alexander across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Alexander (~0.92 confidence) and father William Alexander (~0.92 confidence) and father William Alexander (~0.92 confidence) and mother Flora Alexander (~0.92 confidence) and mother Nell Alexander (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Alexander
b. ~1881
Source father
● Household
· direct · ~0.92
Father
William Alexander
b. ~1883
Source father
● Household
· direct · ~0.92
Father
William Alexander
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Flora Alexander
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Nell Alexander
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Alexander
Son · 1940 · age 21 · b. ~1919 · 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
38 people indexed on this census page (nara:1940:m-t0627-00387-00434)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Conley | 38 | Wife | None | Indiana |
| 42 | Robert Conley | 12 | Son | — | California |
| 43 | Richard Conley | 12 | Son | — | California |
| 44 | Mary Powell | 66 | Head | Wholesale | New York |
| 45 | Fred C. Woolsey | 48 | Head | Salesman | Michigan |
| 46 | Georgia Woolsey | 46 | Wife | — | Illinois |
| 47 | Clifford Woolsey | 17 | Son | — | California |
| 48 | Harold R. Brand | 29 | Head | Salesman | Colorado |
| 49 | Louise Brand | 26 | Wife | — | Texas |
| 50 | Marilyn Brand | 1 | Daughter | — | California |
| 52 | Frank E. Lockwood | 49 | Head | Appraiser | Minnesota |
| 53 | Dorothy Lockwood | 42 | Wife | — | Illinois |
| 54 | Wallace M. Mackay | 59 | Head | None | Pennsylvania |
| 55 | Ruth K. Mackay | 42 | Wife | Secretary | Ohio |
| 56 | Wallace Jr. Mackay | 21 | Son | — | California |
| 57 | John K. Mackay | 19 | Son | — | California |
| 58 | Bess P. Emerson | 49 | Head | Secretary | Illinois |
| 59 | George S. Emerson | 21 | Son | Accountant | California |
| 60 | Audrey D. Emerson | 18 | Daughter | — | California |
| 61 | John D. Bazart | 50 | Head | Artist | New York |
| 62 | Etta Bazart | 44 | Wife | — | Pennsylvania |
| 63 | George Landry | 46 | Head | Painter | Connecticut |
| 64 | Ethel Landry | 41 | Wife | — | Connecticut |
| 65 | Eleanor Landry | 20 | Daughter | — | Connecticut |
| 66 | Katharine Cooley | 66 | Cousin | None | Connecticut |
| 68 | William B. Alexander | 57 | Head | Salesman | Texas |
| 69 | Florabelle Alexander | 56 | Wife | — | Wyoming |
| 70 | Robert W. Alexander THIS PERSON | 21 | Son | Messenger | California |
| 71 | Selma Stine | 77 | Mother-in-law | — | Sweden |
| 72 | Phillip J. Collet | 46 | Head | Meter Man | Germany |
| 73 | Julia Collet | 52 | Wife | — | Austria |
| 74 | Helen S. Collet | 20 | Daughter | — | California |
| 75 | Joseph R. Collet | 19 | Son | File Clerk | California |
| 76 | Arthur M. Collet | 18 | Son | — | California |
| 77 | Raymond M. Collet | 16 | Son | — | California |
| 78 | John R. Collet | 15 | Son | — | California |
| 79 | Edith C. Collet | 11 | Daughter | — | California |
| 80 | William Sweetingham | 61 | Head | Fireman | England |
Pedigree Summary
Robert
Gen 1 · 5 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)