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John Sweeney — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this John Sweeney across the 1910, 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Elizabeth & Elizabeth — first a son (b.~1905), then head of a 4-person household.
Age 35
b. ~1905
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Sweeney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Clerk |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 600 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Clerk |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1905 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Mary Sweeney | Daughter | — | 40 | ~1900 |
| Isabelle Sweeney | Daughter | — | 30 | ~1910 |
| Mrs Sweeney | Head | — | 70 | ~1870 |
| John Sweeney | Son | — | 35 | ~1905 |
Census Appearances
1910
San Francisco, …
Son, age 4
San Francisco, California · implied b. ~1906 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| 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, …
Son, age 14
San Francisco, California · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | John |
| 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 |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 26
San Francisco, California · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 35
San-Francisco-County, California · implied b. ~1905 — 4 household members
| Surname | Sweeney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Clerk |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 600 |
| 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 John Sweeney across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Sweeney (~0.92 confidence) and mother Elizabeth Sweeney (~0.92 confidence) and father John Sweeney (~0.92 confidence) and father John Sweeney (~0.92 confidence) and mother Margaret Sweeney (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Sweeney
b. ~1866
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Sweeney
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
John Sweeney
b. ~1869
Source father
● Household
· direct · ~0.92
Father
John Sweeney
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Margaret Sweeney
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Sweeney
Son · 1940 · age 35 · b. ~1905 · California
★ You are viewing this record
Sibling
Mary Sweeney
Sibling · 1940 · age 40
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabelle Sweeney
Sibling · 1940 · age 30
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 — 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-t0627-00320-00344)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jerry Barker | 9 | Grandson | — | California |
| 42 | Clayton Barker | 7 | Grandson | — | California |
| 43 | Albert White | 54 | Head | Salesman | Romania |
| 44 | Sadie White | 48 | Wife | — | Russia |
| 45 | Rena White | 26 | Daughter | Stenographer | California |
| 46 | Ardell White | 21 | Daughter | Stenographer | California |
| 47 | Betty White | 18 | Daughter | — | California |
| 48 | Mary Trignano | 62 | Head | — | Switzerland |
| 49 | Samuel Trignano | 72 | Husband | — | Italy |
| 50 | Carl Trignano | 29 | Son | Salesman | California |
| 51 | Rose Trignano | 21 | Daughter | — | California |
| 52 | Archie Ullmer | 66 | Head | Teller | California |
| 53 | Alta E. Ullmer | 50 | Wife | — | California |
| 54 | A. C. Von Baralom | 62 | Head | Owner | Germany |
| 55 | Harriet Von Baralom | 54 | Wife | — | California |
| 56 | Herbert Von Baralom | 17 | Son | — | California |
| 57 | Mrs. John Sweeney | 70 | Head | — | California |
| 58 | Mary J. Sweeney | 40 | Daughter | Teacher | California |
| 59 | Isabelle Sweeney | 30 | Daughter | Stenographer | California |
| 60 | John Sweeney THIS PERSON | 35 | Son | Clerk | California |
| 61 | Theodore Smith | 63 | Head | Salesmanager | Ohio |
| 62 | Fred O. Shutts | 65 | Head | Engineer | Iowa |
| 63 | Charlotte Shutts | 52 | Wife | — | California |
| 64 | Martha L. Shutts | 19 | Daughter | — | California |
| 65 | Isabel Devlin | 57 | Head | — | Nevada |
| 66 | Bertram Devlin | 30 | Son | Accountant | California |
| 67 | Clara Devlin | 25 | Daughter | — | California |
| 68 | Tomiko Fujimoto | 30 | Maid | Maid | Japan |
| 69 | Carl V. Mason | 69 | Head | Elec. Contractor | Sweden |
| 70 | Hazel C. Mason | 34 | Daughter | Clerk | Utah |
| 71 | John G. Backer | 62 | Head | M.D. | California |
| 72 | Lillian Backer | 59 | Wife | — | California |
| 73 | John G. Backer | 23 | Son | — | California |
| 74 | Leslie Scott | 37 | Head | Asst. Mgr. | New Jersey |
| 75 | Esther Scott | 32 | Wife | — | California |
| 76 | Peter L. Scott | 6 | Son | — | California |
| 77 | F. W. Nichols | 34 | Head | Salesman | Mass. |
| 78 | Laura Nichols | 31 | Wife | — | California |
| 79 | Jay Jr. Nichols | 2 | Son | — | California |
| 80 | R. C. Ogden | 50 | Head | Attorney | California |
Pedigree Summary
John + 2 siblings
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)