JD
John Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this John Davis across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Albert & Edith — first a head (b.~1897), then head of a 3-person household.
Age 43
b. ~1897
Male
Head
Born: Oregon
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Davis |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Long Beach |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Merchant |
| Industry | Furniture |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Occupation | Merchant |
| Township / Ward | Long Beach |
| Est. Birth Year | ~1897 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Mary Davis | Daughter | — | 12 | ~1928 |
| John Davis | Head | — | 43 | ~1897 |
| Vivian Davis | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Los Angeles, …
Son, age 23
Los Angeles, California · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Salesman |
| Industry | Watch Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1930
Los Angeles, …
Son, age 33
Los Angeles, California · implied b. ~1897 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Oregon |
| Age at First Marriage | 28 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Merchant |
| Industry | Furniture |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Los-Angeles-County, California
Head, age 43
Los-Angeles-County, California · implied b. ~1897 — 3 household members
| Surname | Davis |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Long Beach |
| 1935 Residence (County) | Los Angeles |
| Occupation | Merchant |
| Industry | Furniture |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
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 John Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Davis (~0.92 confidence) and mother Edith Davis (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Davis
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Edith Davis
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Davis
Head · 1940 · age 43 · b. ~1897 · 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
40 people indexed on this census page (nara:1940:m-t0627-00368-00306)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sara Phillips | 23 | Wife | — | Illinois |
| 2 | Chloe Phillips | 2 | Daughter | — | Virginia |
| 3 | Geraldine Davis | 21 | Maid | Maid | Iowa |
| 4 | Alfred J. Betzel | 58 | Head | Manager | California |
| 5 | Iddie Betzel | 52 | Wife | — | Pennsylvania |
| 6 | Henry H. Ferguson | 60 | Head | Auditor | Pennsylvania |
| 7 | Anna M. Ferguson | 56 | Wife | — | Pennsylvania |
| 8 | William M. Ferguson | 30 | Son | Manager | Pennsylvania |
| 9 | Arthur Dinkelspiel | 42 | Head | Manager | California |
| 10 | Marjory Dinkelspiel | 32 | Wife | — | New York |
| 11 | Earl W. Rose | 54 | Head | Contractor | Kansas |
| 12 | Myrtle T. Rose | 50 | Wife | — | California |
| 13 | Maxine B. Rose | 28 | Daughter | — | California |
| 14 | Warren Nedick | 48 | Head | Carpenter | So Dakota |
| 15 | Sila Nedick | 45 | Wife | — | Montana |
| 16 | Warren Jr. Nedick | 23 | Son | Timekeeper | Montana |
| 17 | Walter Nedick | 18 | Son | — | Montana |
| 18 | Daniel Nedick | 83 | Father | — | Missouri |
| 19 | Evelyn Lofland | 36 | Head | Dean Of Girls | Indiana |
| 20 | Marion A. Goff | 37 | Head | Manager | Kansas |
| 21 | John Arthur Ellis | 25 | Head | Manager | California |
| 22 | R. B. Barrett | 55 | Head | Manager | Missouri |
| 23 | Anna W. Barrett | 59 | Wife | — | Missouri |
| 24 | Charles E. Lane | 69 | Head | Manager | Maine |
| 25 | Susan B. Lane | 63 | Wife | — | Salem, Mass |
| 26 | Maya Leedy | 59 | Head | — | Missouri |
| 27 | Frank Harvey Walker | 64 | Head | Manager | California |
| 28 | Violet Katherine Walker | 43 | Wife | — | Tennessee |
| 29 | Henry M. Oliver | 43 | Head | Geologist And Paleontologist | Washington |
| 30 | Mae Anita Oliver | 43 | Wife | — | Pennsylvania |
| 31 | Marie I. Barker | 57 | Head | — | Massachusetts |
| 32 | Mary Hunter | 83 | Companion | Companion | England |
| 33 | Kate Verr | 74 | Head | — | Pennsylvania |
| 34 | Soni S. De Lany | 49 | Guest | — | Pennsylvania |
| 35 | Elizabeth Cantillon | 41 | Head | — | New Jersey |
| 36 | Petronilo Canton | 30 | Head | Houseboy | Philippines |
| 37 | Brother Teofilo | None | M | Apt Hotel | Pa |
| 38 | John P. Davis THIS PERSON | 43 | Head | Merchant | Oregon |
| 39 | Vivian K. Davis | 43 | Wife | Principal | Montana |
| 40 | Mary E. Davis | 12 | Daughter | — | California |
Related Census Records
Pedigree Summary
John
Gen 1 · 2 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)