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Arthur Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Arthur Thompson across the 1910, 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents William & Mina — first a head (b.~1897), then head of a 3-person household.
Age 43
b. ~1897
Male
Head
Born: California
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Thompson |
| Given Name | Arthur M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Engineer Clerk |
| Industry | Filter Corp |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1746 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Engineer Clerk |
| Township / Ward | San Francisco |
| 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 Arthur | Age | Birth yr |
|---|---|---|---|---|
| Arthur Thompson | Head | — | 43 | ~1897 |
| Wallace Thompson | Son | — | 20 | ~1920 |
| Elise Thompson | Spouse | — | 42 | ~1898 |
Census Appearances
1910
San Francisco, …
Son, age 14
San Francisco, California · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Arthur D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Francisco, …
Head, age 24
San Francisco, California · implied b. ~1896 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Arthur |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Asst Manager |
| Industry | Iron Foundry |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Head, age 34
San Francisco, California · implied b. ~1896 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Arthur |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 22 |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Engineer |
| Industry | Manufacturing |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Head, age 43
San-Francisco-County, California · implied b. ~1897 — 3 household members
| Surname | Thompson |
| Given Name | Arthur M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Engineer Clerk |
| Industry | Filter Corp |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1746 |
| Highest Grade | H 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 Arthur Thompson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Thompson (~0.92 confidence) and mother Mina Thompson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Thompson
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Mina Thompson
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Arthur Thompson
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 — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00311-00307)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mabel Desmond | 55 | Lodger | Seamstress | Ireland |
| 2 | Margaret Terhorst | 34 | Head | Comptometer | Washington |
| 3 | Jacquelyn Terhorst | 8 | Daughter | — | Washington |
| 4 | John Terhorst | 3 | Son | — | California |
| 5 | Margaret A. Terhorst | 1 | Daughter | — | California |
| 6 | Cecelia Resenico | 60 | Head | — | California |
| 7 | Mary J. Resenico | 25 | Daughter | Operator | California |
| 8 | George M. Mccormick | 40 | Head | Traveling Freight Agent | California |
| 9 | Elsie Mccormick | 37 | Wife | — | California |
| 10 | Herman Friedhof | 69 | Head | Tailor | Sweden |
| 11 | Jenny Friedhof | 65 | Wife | — | Sweden |
| 12 | Henry Pruffer | 48 | Head | Motorman | New Jersey |
| 13 | Nell Alberta Pruffer | 45 | Wife | — | Illinois |
| 14 | Richard Pruffer | 17 | Son | — | California |
| 15 | Elinor Pruffer | 14 | Daughter | — | California |
| 16 | Mina Trilboetter | 79 | Head | — | Germany |
| 17 | Arthur Inglis | 44 | Head | Engraver | Scotland |
| 18 | Jean Inglis | 44 | Wife | — | Scotland |
| 19 | Raymond Inglis | 8 | Son | — | California |
| 20 | Andrew C. Dunlop | 65 | Head | Janitor | Scotland |
| 21 | Annie Dunlop | 33 | Daughter | — | Scotland |
| 22 | Isabel Dunlop | 14 | Daughter | — | California |
| 23 | Frank Alcazar | 48 | Head | Steward | Mexico |
| 24 | Catherine Alcazar | 48 | Wife | Clerk | Spain |
| 25 | Martha Hanidom | 46 | Head | — | California |
| 26 | Jacklyn Hanidom | 16 | Daughter | — | California |
| 27 | Robert J. Villon | 49 | Head | Underwriter | Michigan |
| 28 | Mary Villon | 45 | Wife | — | Illinois |
| 29 | Muriel P. Villon | 20 | Daughter | — | California |
| 30 | Edward C. Muriel | 69 | Head | Janitor | New York |
| 31 | Clara Muriel | 70 | Wife | — | New York |
| 32 | Clara M. Muriel | 44 | Daughter | Saleslady | New York |
| 33 | Edward H. Nelson | 29 | Brother-in-law | Clerk | California |
| 34 | Annie M. Runings | 71 | Head | — | Canada |
| 35 | Mary R. Runings | 43 | Daughter | Stenographer | California |
| 36 | Bessie R. Runings | 38 | Daughter | Stenographer | California |
| 37 | Arthur M. Thompson THIS PERSON | 43 | Head | Engineer Clerk | California |
| 38 | Elise W. Thompson | 42 | Wife | Statistician | California |
| 39 | Wallace W. Thompson | 20 | Son | — | California |
| 40 | Ernest Gwyn | 55 | Head | Cashier | California |
Pedigree Summary
Arthur
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)