LS
Leonard Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Leonard Smith across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Walter & Arthur — first a head (b.~1886), then head of a 5-person household.
Age 54
b. ~1886
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Smith |
| Given Name | Leonard O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Labour |
| Industry | Cont. Building |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 988 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Labour |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1886 |
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 Leonard | Age | Birth yr |
|---|---|---|---|---|
| Leonard Smith | Head | — | 54 | ~1886 |
| Richard Smith | Son | — | 14 | ~1926 |
| Robert Smith | Son | — | 25 | ~1915 |
| Scott Smith | Son | — | 23 | ~1917 |
| Bertha Smith | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Los Angeles, …
Son, age 32
Los Angeles, California · implied b. ~1888 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Leonard H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | England |
| Year of Immigration | 1909 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Tailor |
| Industry | Tailor Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Year of Naturalization | 1915 |
| Birthplace (normalized) | england |
1930
Los Angeles, …
Son, age 44
Los Angeles, California · implied b. ~1886 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Leonard W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Veteran | Yes |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Los-Angeles-County, California
Head, age 54
Los-Angeles-County, California · implied b. ~1886 — 5 household members
| Surname | Smith |
| Given Name | Leonard O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Naturalization Status | Naturalized |
| Occupation | Labour |
| Industry | Cont. Building |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 988 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Leonard Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Walter Smith (~0.92 confidence) and father Arthur Smith (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Walter Smith
b. ~1861
Source father
● Household
· direct · ~0.92
Father
Arthur Smith
b. ~1862
Source father
● Household
· direct · ~0.92
This person
Anchor record
Leonard Smith
Head · 1940 · age 54 · b. ~1886 · 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-t0627-00375-00818)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Denise A. Clark | 20 | Son | Attendant | California |
| 2 | Doris C. Mccoy | 50 | Sister | Landlady | Canada-Eng |
| 3 | Donald B. Mccoy | 21 | Nephew | Clerk | Canada-Eng |
| 4 | Dorothy M. Heard | 21 | Niece | Stenographer | California |
| 5 | Charles Heimeling | 60 | Head | Property Man | Bavaria |
| 6 | Emma Heimeling | 68 | Wife | — | Austria |
| 7 | Baron Guy Apline | 56 | Head | Attorney | Iowa |
| 8 | Bess D. Apline | 53 | Wife | Secretary | Missouri |
| 9 | Elizabeth Crouch | 21 | Niece | Carpenter | Missouri |
| 10 | Orval Bussard | 23 | Head | — | Missouri |
| 11 | Helma Bussard | 19 | Wife | — | Idaho |
| 12 | Winona Bussard | 1 | Daughter | — | California |
| 13 | Ralph Wickenkamp | 46 | Head | Mail Man | Iowa |
| 14 | Margaret Wickenkamp | 44 | Wife | — | Iowa |
| 15 | Dorothy Mae Wickenkamp | 15 | Daughter | — | Iowa |
| 16 | Fred Mcdougal | 21 | Head | Cowboy | California |
| 17 | Cornelia Mcdougal | 19 | Wife | — | Georgia |
| 18 | Michael Mcdougal | 1 | Son | — | California |
| 19 | Harold Philly | 29 | Head | Salesman | Indiana |
| 20 | Velma Philly | 26 | Wife | — | Colorado |
| 21 | Susan Philly | 0 | Daughter | — | California |
| 22 | Brian Philly | 0 | Son | — | California |
| 23 | Elizabeth Cassels | 54 | Head | Asst. Exec. | Pennsylvania |
| 24 | Charles W. Schmidt | 54 | Head | Salesman | Iowa |
| 25 | Johanna M. Schmidt | 52 | Wife | — | Oregon |
| 26 | Marguerite Schmidt | 20 | Daughter | — | California |
| 27 | Charleen Schmidt | 17 | Daughter | — | California |
| 28 | Charles W. Jr. Schmidt | 11 | Son | — | California |
| 29 | Don R. Cassels | 24 | Head | Salesman | California |
| 30 | Evelyn E. Cassels | 23 | Wife | — | Canada-Eng |
| 31 | Donha E. Cassels | 2 | Daughter | — | California |
| 32 | Leonard O. Smith THIS PERSON | 54 | Head | Labour | England |
| 33 | Bertha N. Smith | 51 | Wife | — | Iowa |
| 34 | Robert H. Smith | 25 | Son | Clerk | California |
| 35 | Scott Smith | 23 | Son | — | California |
| 36 | Richard W. Smith | 14 | Son | — | California |
| 37 | Merrill A. Bell | 76 | Head | — | New York |
| 38 | Carrie L. Bell | 66 | Wife | — | Michigan |
| 39 | End Block 91 | None | — | — | — |
| 40 | Watson W. Robertson | 38 | Head | Labour | Missouri |
Pedigree Summary
Leonard
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)