DJ
David Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this David Johnson across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Alonzo & Alonzo — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Johnson |
| Given Name | David P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Elevator Opr. |
| Industry | Bus. Bldg. |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 720 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Elevator Opr. |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1918 |
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 David | Age | Birth yr |
|---|---|---|---|---|
| Pauline Johnson | Daughter | — | 20 | ~1920 |
| Alonzo Johnson | Head | — | 51 | ~1889 |
| David Johnson | Other | — | ~1940 | |
| David Johnson | Son | — | 22 | ~1918 |
| Edith Johnson | Spouse | — | 47 | ~1893 |
Census Appearances
1920
San Bernardino, …
Son, age 2
San Bernardino, California · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | David P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Nebraska |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Los Angeles, …
Son, age 12
Los Angeles, California · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | David P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Los-Angeles-County, California
Son, age 22
Los-Angeles-County, California · implied b. ~1918 — 5 household members
| Surname | Johnson |
| Given Name | David P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Occupation | Elevator Opr. |
| Industry | Bus. Bldg. |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 720 |
| Highest Grade | H-2 |
| 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 David Johnson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Alonzo Johnson (~0.92 confidence) and father Alonzo Johnson (~0.92 confidence) and mother Edith Johnson (~0.92 confidence) and mother Edith Johnson (~0.92 confidence) and mother Edith Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alonzo Johnson
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Alonzo Johnson
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Edith Johnson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Edith Johnson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Edith Johnson
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
David Johnson
Son · 1940 · age 22 · b. ~1918 · California
★ You are viewing this record
Sibling
Pauline Johnson
Sibling · 1940 · age 20
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-t0627-00419-00143)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lee Conti | 46 | Mother | Florist | Japan |
| 2 | Reuben H. O. Ricketts | 41 | Head | Superintendent | Kansas |
| 3 | Gladys B. Ricketts | 25 | Wife | — | Louisiana |
| 4 | Mavis B. Ricketts | 1 | Daughter | — | California |
| 5 | Jennie M. Smith | 61 | Head | — | Illinois |
| 6 | Sarah Lou Layne | 76 | Head | — | Tennessee |
| 7 | Agnes Edna Layne | 54 | Daughter | Artist | Tennessee |
| 8 | James M. Layne | 49 | Son | — | Tennessee |
| 9 | Chas. Fickes | 58 | Head | Mechanist | Missouri |
| 10 | Nettie M. Fickes | 57 | Wife | — | Illinois |
| 11 | Virginia J. Fickes | 31 | Daughter | — | Illinois |
| 12 | John H. Southerland | 31 | Head | Salesman | Kansas |
| 13 | Bernice M. Southerland | 27 | Wife | — | Colorado |
| 14 | Sadie Nelson | 55 | Head | — | Nebraska |
| 15 | Robert Mcpherson | 55 | Head | Carpenter | Scotland |
| 16 | Christine Mcpherson | 56 | Wife | — | England |
| 17 | Harry G. Osborne | 31 | Head | Contractor | Illinois |
| 18 | Edith H. Osborne | 31 | Wife | — | Washington |
| 19 | Robert Osborne | 14 | Son | Operator | California |
| 20 | Sandra G. Osborne | 2 | Daughter | — | California |
| 21 | Shirley B. Turner | 22 | Sister | Waitress | New Mexico |
| 22 | Chas. J. Bushmeyer | 75 | Head | — | Missouri |
| 23 | Emma E. Bushmeyer | 66 | Wife | — | Arkansas |
| 24 | John M. Clemons | 31 | Head | Inspector | Texas |
| 25 | Eva C. Clemons | 29 | Wife | Technician | Iowa |
| 26 | Michael R. Mccanis | 26 | Head | Truck Driver | California |
| 27 | Frances Mccanis | 22 | Wife | Laborer | California |
| 28 | James H. Fisher | 36 | Head | Salesman | Illinois |
| 29 | Beatrice M. Fisher | 39 | Wife | — | New York |
| 30 | Jesse J. Lockwood | 27 | Head | Laborer | California |
| 31 | Irma D. Lockwood | 23 | Wife | — | Illinois |
| 32 | Katherine M. Luse | 59 | Mother-in-law | — | Missouri |
| 33 | Dallas L. Luse | 54 | Brother-in-law | Machinist | Illinois |
| 34 | John G. Slingsby | 78 | Head | — | England |
| 35 | Edith L. Slingsby | 40 | Son | Truck Driver | Nebraska |
| 36 | Alonzo B. Johnson | 51 | Head | Mail Carrier | Missouri |
| 37 | Edith H. Johnson | 47 | Wife | — | Nebraska |
| 38 | David P. Johnson THIS PERSON | 22 | Son | Elevator Opr. | Colorado |
| 39 | Pauline Johnson | 20 | Daughter | — | New Mexico |
| 40 | David P. Jr. Johnson | 0 | Grandson | — | California |
Pedigree Summary
David + 1 sibling
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)