GC
George Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Contra-Costa-County, California
Our Model Tree links this George Clark across the 1920, 1930 and 1940 US Censuses in Contra-Costa-County, California (XGBoost, ~Confirmed), with identified parents Claude & Claude — first a head (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Head
Born: California
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Contra-Costa-County, California |
| Surname | Clark |
| Given Name | George E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | JUD-TWP-7 |
| 1935 Residence (County) | Contra Costa |
| Additional Details | |
| Occupation | Accountant |
| Industry | Petroleum |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1920 |
| Highest Grade | C 4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Accountant |
| Township / Ward | Judtwp7 |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to George | Age | Birth yr |
|---|---|---|---|---|
| George Clark | Head | — | 32 | ~1908 |
| Robert Carlson | Other | — | 24 | ~1916 |
| Richard Clark | Son | — | 1 | ~1939 |
| Phyllis Clark | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Contra Costa, …
Son, age 13
Contra Costa, California · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | George E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Texas |
| Mother's Birthplace | California |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Contra Costa, …
Son, age 23
Contra Costa, California · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Texas |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Contra-Costa-County, California
Head, age 32
Contra-Costa-County, California · implied b. ~1908 — 4 household members
| Surname | Clark |
| Given Name | George E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | JUD-TWP-7 |
| 1935 Residence (County) | Contra Costa |
| Occupation | Accountant |
| Industry | Petroleum |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1920 |
| Highest Grade | C 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 George Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Claude Clark (~0.92 confidence) and father Claude Clark (~0.92 confidence) and mother Adaline Clark (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Claude Clark
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Claude Clark
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Adaline Clark
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
George Clark
Head · 1940 · age 32 · b. ~1908 · 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 — Contra-Costa-County, California
Open full size
1940 US Federal Census — Contra-Costa-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00196-00595)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marie Verdi | 33 | Gries | Stenographer | California |
| 2 | Ralph V. Martin | 45 | Head | Salesman | California |
| 3 | Loretta M. Martin | 43 | Wife | — | Pennsylvania |
| 4 | Vernon H. Martin | 24 | Son | — | California |
| 5 | Earl H. Parson | 36 | Head | Baker | California |
| 6 | Adelaide G. Parson | 34 | Wife | — | California |
| 7 | David C. Parson | 3 | Son | — | California |
| 8 | Gordon A. Woods | 29 | Head | Sales Manager | California |
| 9 | Elinor D. Woods | 27 | Wife | — | California |
| 10 | Daniel P. Woods | 1 | Son | — | California |
| 11 | Ray B. Jones | 26 | Head | Shop Foreman | Australia |
| 12 | Katherine A. Jones | 22 | Wife | Cashier | Iowa |
| 13 | Lisle H. Perwalt | 44 | Head | Carrier | California |
| 14 | Mary H. Perwalt | 37 | Wife | — | Wisconsin |
| 15 | Elliott L. Perwalt | 9 | Son | — | California |
| 16 | Thomas B. Griffith | 30 | Head | Mechanical Engineer | California |
| 17 | Florence M. Griffith | 30 | Wife | Stenographer | South Dakota |
| 18 | George E. Clark THIS PERSON | 32 | Head | Accountant | California |
| 19 | Phyllis A. Clark | 32 | Wife | Teacher | Massachusetts |
| 20 | Richard E. Clark | 1 | Son | — | Massachusetts |
| 21 | Robert J. Carlson | 24 | Lodger | Pattern Maker | California |
| 22 | Kenneth K. Macdonald | 29 | Head | Chemical Engineer | Washington |
| 23 | Jane H. Macdonald | 26 | Wife | — | Oregon |
| 24 | Jean H. Macdonald | 2 | Daughter | — | California |
| 25 | James K. Pellett | 35 | Head | Traffic Manager | Kansas |
| 26 | Ethel M. Pellett | 28 | Wife | — | California |
| 27 | Richard S. Pellett | 4 | Son | — | California |
| 28 | George H. King | 41 | Head | Bookkeeper | New York |
| 29 | Rosamond C. King | 33 | Wife | — | California |
| 30 | Donald S. King | 3 | Son | — | California |
| 31 | John K. Watson | 33 | Head | Salesman | New Jersey |
| 32 | Lillian Watson | 31 | Wife | — | California |
| 33 | Joan B. Watson | 5 | Daughter | — | California |
| 34 | Oliver J. Brooks | 31 | Head | Clerk | California |
| 35 | Ina M. Brooks | 28 | Wife | — | California |
| 36 | Ronald J. Brooks | 3 | Son | — | California |
| 37 | Gail J. Brooks | 1 | Daughter | — | California |
| 38 | Carl H. Perttu | 44 | Head | Carpenter | Finland |
| 39 | Sanari Perttu | 46 | Wife | Cook | Finland |
| 40 | John C. Hinchston | 33 | Head | Pressman | Holland |
Pedigree Summary
George
Gen 1 · 3 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)