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Mary Bradley — 1940 US Census Record
Model Tree available1940 United States Federal Census · Union-County, Iowa
Our Model Tree links this Mary Bradley across the 1920, 1930 and 1940 US Censuses in Union-County, Iowa (XGBoost, ~Confirmed), with identified parents John & Mary — first a daughter (b.~1896), then head of a 4-person household.
Age 44
b. ~1896
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, Iowa |
| Surname | Bradley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Creston City |
| 1935 Residence (County) | Union County |
| Additional Details | |
| Occupation | Clerk & Bookkeeper |
| Industry | Retail Drug Store |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Clerk & Bookkeeper |
| Township / Ward | Creston City |
| Est. Birth Year | ~1896 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Bradley | Daughter | — | 44 | ~1896 |
| John Bradley | Head | — | 69 | ~1871 |
| William Bradley | Son | — | 25 | ~1915 |
| Mary Bradley | Spouse | — | 69 | ~1871 |
Census Appearances
1920
Union, Iowa
Daughter, age 23
Union, Iowa · implied b. ~1897 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Ohio |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Union, Iowa
Daughter, age 34
Union, Iowa · implied b. ~1896 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Iowa |
| Age at First Marriage | Yes |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Ohio |
| Occupation | Book-keeper |
| Industry | Coal Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Union-County, Iowa
Daughter, age 44
Union-County, Iowa · implied b. ~1896 — 4 household members
| Surname | Bradley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Creston City |
| 1935 Residence (County) | Union County |
| Occupation | Clerk & Bookkeeper |
| Industry | Retail Drug Store |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Mary Bradley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Bradley (~0.92 confidence) and mother Mary Bradley (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Bradley
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Mary Bradley
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Bradley
Daughter · 1940 · age 44 · b. ~1896 · Iowa
★ You are viewing this record
Sibling
William Bradley
Sibling · 1940 · age 25
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 — Union-County, Iowa
Open full size
1940 US Federal Census — Union-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01208-00059)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Virginia Jarvis | 27 | Daughter | Saleslady | Iowa |
| 2 | Bernadine Burton | 23 | Maid | Maid | Iowa |
| 3 | Ray S Cook | 45 | Head | Salesman | Iowa |
| 4 | Gertrude Cook | 39 | Wife | — | Iowa |
| 5 | Joseph A Cook | 20 | Son | — | Missouri |
| 6 | Chas E Snodgrass | 39 | Head | Trucker | Iowa |
| 7 | Vesper Snodgrass | 40 | Wife | — | Iowa |
| 8 | Maxine Snodgrass | 19 | Daughter | Waitress | Iowa |
| 9 | Wayne Snodgrass | 16 | Son | — | Iowa |
| 10 | Margaret Snodgrass | 14 | Daughter | — | Iowa |
| 11 | Earl Johnson | 38 | Head | Laborer | Iowa |
| 12 | Dora Johnson | 35 | Wife | — | Iowa |
| 13 | Marilyn Jean Johnson | 6 | Daughter | — | Iowa |
| 14 | Earl G Johnson | 5 | Son | — | Iowa |
| 15 | Harold Mullen | 35 | Head | Attendant | Indiana |
| 16 | Dorothy Mullen | 29 | Wife | — | Indiana |
| 17 | Carrol Thomas | 33 | Head | Manager | Iowa |
| 18 | Lillian Thomas | 36 | Wife | — | Iowa |
| 19 | Carrol J Jr Thomas | 1 | Son | — | Iowa |
| 20 | Chas Edw Thomas | 0 | Son | — | Iowa |
| 21 | Irene Shoenhair | 20 | Maid | Maid | Iowa |
| 22 | Cleo Clayton | 45 | Head | Salesman | Iowa |
| 23 | Zelma Clayton | 40 | Wife | — | Iowa |
| 24 | Alice Clayton | 89 | Mother | — | Kentucky |
| 25 | Harry Scullen | 66 | Head | — | Iowa |
| 26 | Clara Scullen | 62 | Wife | — | Iowa |
| 27 | Webster S Senebaugh | 46 | Head | Chiropractor Doctor | Illinois |
| 28 | Olive Senebaugh | 46 | Wife | — | Iowa |
| 29 | Marie Senebaugh | 14 | Daughter | — | Iowa |
| 30 | Ellen Senebaugh | 12 | Daughter | — | Iowa |
| 31 | John J Bradley | 69 | Head | Clerk | Iowa |
| 32 | Mary Bradley | 69 | Wife | — | Ohio |
| 33 | Mary Bradley THIS PERSON | 44 | Daughter | Clerk & Bookkeeper | Iowa |
| 34 | William Bradley | 25 | Son | Clerk | Iowa |
| 35 | Leslie Mccoy | 51 | Head | Laborer | Nebraska |
| 36 | Letha Mccoy | 50 | Wife | — | Iowa |
| 37 | Gerald Dillman | 22 | Head | Asst Manager | Iowa |
| 38 | Hazel Dillman | 22 | Wife | Clerk | Iowa |
| 39 | Ray H Youngman | 38 | Head | Manager | Illinois |
| 40 | Gertrude Youngman | 40 | Wife | — | Iowa |
Related Census Records
Pedigree Summary
Mary + 1 sibling
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)