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John Bradley — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this John Bradley across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Frederick & Mary — first a son (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Bradley |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Attorney at Law |
| Industry | Private Practice |
| Class of Worker | OA |
| Hours Worked | 35 |
| Income (1939) | 26 |
| Highest Grade | C-5 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Attorney At Law |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1911 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Mary Bradley | Head | — | 57 | ~1883 |
| Katherine O'Connor | Other | — | 63 | ~1877 |
| John Bradley | Son | — | 29 | ~1911 |
Census Appearances
1920
San Francisco, …
Son, age 9
San Francisco, California · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | John Evans |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 19
San Francisco, California · implied b. ~1911 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | John D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| 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 29
San-Francisco-County, California · implied b. ~1911 — 3 household members
| Surname | Bradley |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Attorney at Law |
| Industry | Private Practice |
| Class of Worker | OA |
| Hours Worked | 35 |
| Income (1939) | 26 |
| Highest Grade | C-5 |
| 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 Bradley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frederick Bradley (~0.92 confidence) and mother Mary Bradley (~0.92 confidence) and mother Mary Bradley (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frederick Bradley
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Mary Bradley
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Mary Bradley
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Bradley
Son · 1940 · age 29 · b. ~1911 · 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
39 people indexed on this census page (nara:1940:m-t0627-00314-00301)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gladys Lilygren | 23 | Daughter | Beauty Opr. | Minnesota |
| 42 | Norah Palmer | 33 | Head | Manager | England |
| 43 | Alan Palmer | 9 | Son | — | Washington |
| 44 | Nellie Fleming | 53 | Mother | — | England |
| 45 | Mary A. Claverie | 19 | Head | Owner Mgr. | California |
| 46 | Margaret Mccarthy | 17 | Sister | Store Salesman | California |
| 47 | Otis I. Parrott | 40 | Lodger | Clerk | Kansas |
| 48 | Richard N. Hathaway | 19 | Lodger | Salesman | California |
| 49 | Richard Loughead | 19 | Lodger | Office Worker | California |
| 51 | Allie W. Fryslaben | 57 | Head | Carpenter | Texas |
| 52 | Eleanor Fryslaben | 53 | Wife | — | Massachusetts |
| 53 | Irene Fryslaben | 31 | Daughter | Carpet Layer | California |
| 54 | Eleanor Fryslaben | 19 | Daughter | Housekeeper | California |
| 55 | Roy Fryslaben | 18 | Son | Housework | California |
| 56 | George Fryslaben | 16 | Son | New Worker | California |
| 57 | Ernest Fryslaben | 15 | Son | — | California |
| 58 | Howard Fryslaben | 3 | Grandson | — | California |
| 59 | Oscar Kramisass | 44 | Head | Rigger | Norway |
| 60 | Helen Kramisass | 48 | Wife | — | England |
| 61 | John Mckinnon | 24 | Son | Bartender | Scotland |
| 62 | James Mckinnon | 19 | Son | New Worker | Scotland |
| 63 | Bessie Mckinnon | 16 | Daughter | — | Scotland |
| 64 | Lawrence Thompson | 41 | Head | Wpa Clerk | Massachusetts |
| 65 | Annie Mclean | 69 | Mother | — | Canada English |
| 66 | Georgia Babcock | 53 | Head | Wpa Musician | Iowa |
| 67 | Carlos F. Babcock | 30 | Son | Bookkeeper | Wyoming |
| 68 | Thomas E. Mccauley | 38 | Head | Purchasing Agent | Pennsylvania |
| 69 | Ernestine Mccauley | 37 | Wife | — | California |
| 70 | Ellen Mccauley | 15 | Daughter | — | California |
| 71 | Thomas Mccauley | 14 | Son | — | California |
| 72 | Ann Mccauley | 12 | Daughter | — | California |
| 73 | Mervin Mccauley | 10 | Son | — | California |
| 74 | Lois Mccauley | 8 | Daughter | — | California |
| 75 | William Mccauley | 2 | Son | — | California |
| 76 | Walter Cota | 23 | Nephew | Electrician Helper | California |
| 77 | Mary Bradley | 57 | Head | Shipping Clerk | California |
| 78 | John Bradley THIS PERSON | 29 | Son | Attorney At Law | California |
| 79 | Katherine M. O'Connor | 63 | Sister | — | California |
| 80 | Robert E. Brown | 41 | Head | Bldg. Contractor | Utah |
Pedigree Summary
John
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)