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William Clarke — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this William Clarke across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Clarke |
| Given Name | William A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Montrose |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Laborer |
| Industry | Concrete Engineering Constr. |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 240 |
| Highest Grade | H 4 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Laborer |
| Township / Ward | Glendale City |
| Est. Birth Year | ~1921 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Arthur Clarke | Head | — | 44 | ~1896 |
| James Clarke | Son | — | 10 | ~1930 |
| Robert Clarke | Son | — | 6 | ~1934 |
| Donald Clarke | Son | — | 12 | ~1928 |
| Gertrude Clarke | Spouse | — | 39 | ~1901 |
| Nancy Clarke | Daughter | — | 7 | ~1933 |
| William Clarke | Son | — | 19 | ~1921 |
Census Appearances
1930
Los Angeles, …
Son, age 8
Los Angeles, California · implied b. ~1922 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | England |
| Mother's Birthplace | Russia |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 19
Los-Angeles-County, California · implied b. ~1921 — 7 household members
| Surname | Clarke |
| Given Name | William A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Montrose |
| 1935 Residence (County) | Los Angeles |
| Occupation | Laborer |
| Industry | Concrete Engineering Constr. |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 240 |
| Highest Grade | H 4 |
| 1935 Residence | California |
| 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 William Clarke across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Clarke
Son · 1940 · age 19 · b. ~1921 · California
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Sibling
James Clarke
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Clarke
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Clarke
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Clarke
Sibling · 1940 · age 12
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
39 people indexed on this census page (nara:1940:m-t0627-00232-00172)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ruby Gierke | 43 | Wife | Bookkeeper | North Dakota |
| 2 | Joann Gierke | 9 | Daughter | — | California |
| 3 | Gale Gierke | 5 | Son | — | California |
| 4 | A. Ronald Malamara | 31 | Head | S | Pennsylvania |
| 5 | Doris Malamara | 35 | Wife | S | Massachusetts |
| 6 | Diane Gittelson | 12 | Daughter | — | California |
| 7 | Donald Gittelson | 11 | Step son | — | California |
| 8 | Charles A. Gillmann | 24 | Head | Travelling Salesman | Illinois |
| 9 | Mary Lucile Gillmann | 24 | Wife | H | Canada-English |
| 10 | Frederick Gillmann | 2 | Son | — | California |
| 11 | Mary Elizabeth Gillmann | 0 | Daughter | — | California |
| 12 | John A. Johnson | 29 | Lodger | Couponing-Crew Manager | Illinois |
| 13 | William E. Brown | 34 | Head | Plant Foreman Superintendent | Kansas |
| 14 | Edith Brown | 33 | Wife | Packer | Kansas |
| 15 | Norma Brown | 9 | Daughter | — | Kansas |
| 16 | William W. Edmondson | 40 | Head | Department Sales Manager | Texas |
| 17 | Lucile Edmondson | 28 | Wife | H | Maine |
| 18 | Wendy Edmondson | 0 | Daughter | — | California |
| 19 | Grace Bartlett | 59 | Mother in law | H | Maine |
| 20 | Clifford Hansen | 26 | Head | Plumber | Iowa |
| 21 | Mildred Hansen | 27 | Wife | H | California |
| 22 | Esther Hansen | 2 | Daughter | — | California |
| 23 | Raymond E. Tisdale | 28 | Head | Travelling Salesman | Kentucky |
| 24 | Evelyn J. Tisdale | 22 | Wife | H | California |
| 25 | Denise A. Tisdale | 2 | Daughter | — | California |
| 26 | Christian Grinde | 53 | Head | Painter-Utility Maintenance | Norway |
| 27 | Verna Grinde | 47 | Wife | — | Utah |
| 28 | Arthur C. Clarke | 44 | Head | Stationary Engineer | California |
| 29 | Gertrude M. Clarke | 39 | Wife | Postal Clerk | Iowa |
| 30 | William A. Clarke THIS PERSON | 19 | Son | Laborer | California |
| 31 | Donald E. Clarke | 12 | Son | — | California |
| 32 | James C. Clarke | 10 | Son | — | California |
| 33 | Nancy C. Clarke | 7 | Daughter | — | California |
| 34 | Robert E. Clarke | 6 | Son | — | California |
| 35 | Floyd A. Peet | 64 | Head | Printer | Iowa |
| 36 | Ida J. Peet | 69 | Wife | H | Wisconsin |
| 37 | H. Newell Andrews | 39 | Head | Outside Salesman | Massachusetts |
| 38 | Lucille D. Andrews | 40 | Wife | H | Washington |
| 39 | Carolyn L. Kemmler | 16 | Step daughter | S | Washington |
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)