JW
James Watson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this James Watson across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents James & James — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Watson |
| Given Name | James Jr |
| 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 County |
| Additional Details | |
| Occupation | Machine Operator |
| Industry | Insurance Co |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 810 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Machine Operator |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Jessie Watson | Daughter | — | 18 | ~1922 |
| Robina Watson | Daughter | — | 19 | ~1921 |
| James Watson | Head | — | 49 | ~1891 |
| James Watson | Son | — | 21 | ~1919 |
| Lilly Watson | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Los Angeles, …
Son, age 1
Los Angeles, California · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Watson |
| Given Name | James Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Los Angeles, …
Son, age 11
Los Angeles, California · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Watson |
| Given Name | James S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| 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 — 5 household members
| Surname | Watson |
| Given Name | James Jr |
| 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 County |
| Occupation | Machine Operator |
| Industry | Insurance Co |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 810 |
| 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 James Watson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Watson (~0.92 confidence) and father James Watson (~0.92 confidence) and mother Lilly Watson (~0.92 confidence) and father James Watson (~0.92 confidence) and mother Polly Watson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Watson
b. ~1891
Source father
● Household
· direct · ~0.92
Father
James Watson
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Lilly Watson
b. ~1892
Source mother
● Household
· direct · ~0.92
Father
James Watson
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Polly Watson
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Watson
Son · 1940 · age 21 · b. ~1919 · California
★ You are viewing this record
Sibling
Robina Watson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jessie Watson
Sibling · 1940 · age 18
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-t0627-00403-00202)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carmen Kohling | 41 | Wife | — | Mexico |
| 2 | William Kohling | 20 | Son | Delivery Boy | Mexico |
| 3 | Carmen Kohling | 17 | Daughter | New Worker | Mexico |
| 4 | David Kohling | 15 | Son | — | Mexico |
| 5 | Frank Kohling | 14 | Son | — | California |
| 6 | Lupe Kohling | 9 | Daughter | — | California |
| 7 | Richard Kohling | 5 | Son | — | California |
| 8 | Rose Marie Kohling | 2 | Daughter | — | California |
| 9 | James E Watson | 49 | Head | Horticulturist | Scotland |
| 10 | Lilly Watson | 48 | Wife | — | Scotland |
| 11 | James Jr Watson THIS PERSON | 21 | Son | Machine Operator | California |
| 12 | Robina Watson | 19 | Daughter | Cashier | California |
| 13 | Jessie Watson | 18 | Daughter | — | California |
| 14 | Bess M Pulvert | 66 | Head | — | Alabama |
| 15 | George Thompson | 68 | Lodger | House Mechanic | Iowa |
| 16 | Ruth E Middleton | 43 | Head | Domestic Cook | Indiana |
| 17 | Doris Jane Middleton | 22 | Daughter | Mother'S Helper | Indiana |
| 18 | — | None | — | — | — |
| 19 | — | None | — | — | — |
| 20 | Helen Gordon | 36 | Head | Domestic Cook | Colorado |
| 21 | John Ready | 27 | Lodger | Musician | Arizona |
| 22 | Henry Weideman | 38 | Head | Driver Milk | Canada English |
| 23 | Charles S Weideman | 11 | Son | — | California |
| 24 | Henry A Weideman | 9 | Son | — | California |
| 25 | Jack Genera | 43 | Head | Fry Cook | Philippine Islands |
| 26 | Helene G Genera | 16 | Daughter | — | California |
| 27 | Raymond F Genera | 12 | Son | — | California |
| 28 | Harry Newton | 86 | Head | — | Michigan |
| 29 | Mary Newton | 68 | Wife | — | New York |
| 30 | Mauritz Olson | 24 | Head | Plasterer | Nebraska |
| 31 | Alice S Olson | 24 | Wife | — | Nebraska |
| 32 | Hans Fischer | 46 | Head | 22 | Austria |
| 33 | Grete Fischer | 26 | Wife | 22 | Austria |
| 34 | Ernest Fletcher | 32 | Head | Bank Clerk | California |
| 35 | Madge Fletcher | 60 | Mother | Housework | New Zealand |
| 36 | Joyce E Crane | 33 | Lodger | Junior Clerk | Montana |
| 37 | Ben F Walk | 48 | Head | Junior Accountant | Wisconsin |
| 38 | Esther M Walk | 50 | Wife | — | Wisconsin |
| 39 | Ben F Jr Walk | 21 | Son | Station Attendant | Minnesota |
| 40 | Charles Head Brown | 57 | Head | Wholesale Fruit Shipper | Virginia |
Pedigree Summary
James + 2 siblings
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)