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Helen Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Helen Davis across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Alfred & Albert — first a daughter (b.~1902), then head of a 4-person household.
Age 38
b. ~1902
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Davis |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Secretary |
| Industry | University |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1500 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Secretary |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1902 |
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 Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Davis | Daughter | — | 38 | ~1902 |
| Helaine Davis | Head | — | 71 | ~1869 |
| Anne Horkins | Other | — | 35 | ~1905 |
| Anne Miller | Spouse | — | 38 | ~1902 |
Census Appearances
1920
Cook, Illinois
Daughter, age 18
Cook, Illinois · implied b. ~1902 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Daves |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Norway |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 28
Cook, Illinois · implied b. ~1902 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Helen A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Norway |
| Occupation | Secretary |
| Industry | University |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 38
Cook-County, Illinois · implied b. ~1902 — 4 household members
| Surname | Davis |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Secretary |
| Industry | University |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1500 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Helen Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alfred Davis (~0.92 confidence) and father Albert Daves (~0.92 confidence) and mother Helaine Davis (~0.92 confidence) and mother Anne Miller (~0.50 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.82
Father
Alfred Davis
b. ~1850
Source father
● Household
· direct · ~0.92
Father
Albert Daves
b. ~1854
Source father
● Household
· direct · ~0.92
Mother
Helaine Davis
b. ~1869
Source mother
● Household
· direct · ~0.92
Mother
Anne Miller
b. ~1902
Source mother
● Household
· direct · ~0.5
This person
Anchor record
Helen Davis
Daughter · 1940 · age 38 · b. ~1902 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00957-00092)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Eleazora De Grasse | 11 | Son | — | Illinois |
| 42 | Christina Bessert | 63 | Wife | — | Germany |
| 43 | Hazel Pruitt | 62 | Head | — | Germany |
| 44 | Margaret D. Kelso | 46 | Wife | — | Illinois |
| 45 | John R. Kelso | 46 | Head | Chauffeur | Illinois |
| 46 | June Kelso | 19 | Daughter | Clerk | Illinois |
| 47 | Shirley Kelso | 18 | Daughter | Clerk | Illinois |
| 48 | Quentin Kelso | 17 | Son | — | Illinois |
| 49 | Donald Kelso | 15 | Son | — | Illinois |
| 50 | Vernon Kelso | 12 | Son | — | Illinois |
| 51 | Betty Kelso | 9 | Daughter | — | Illinois |
| 52 | Thomas O'Brien | 44 | Brother-in-law | — | Illinois |
| 53 | Charles D. Patterson | 55 | Head | Tower Man | Illinois |
| 54 | Ida M. Patterson | 52 | Wife | — | Minnesota |
| 55 | Jerome Bohac | 25 | Head | Grocer | Illinois |
| 56 | Mildred Bohac | 24 | Sister | Sales Girl | Illinois |
| 57 | Alice Bohac | 20 | Sister | New Worker | Indiana |
| 58 | Jean R. Kriger | 52 | Head | Storekeeper | Indiana |
| 59 | Lorraine Kriger | 19 | Daughter | Bookkeeper | Illinois |
| 60 | Helen Kriger | 17 | Daughter | — | Illinois |
| 61 | Peter Thompson | 49 | Boarder | Driver | Illinois |
| 62 | Joseph Alashpini | 25 | Lodger | Laborer | Minnesota |
| 63 | Hanna Kande | 70 | Wife | — | Free State Ireland |
| 64 | James Kande | 71 | Head | — | Illinois |
| 65 | Helaine Davis | 71 | Head | — | Norway |
| 66 | Helen Davis THIS PERSON | 38 | Daughter | Secretary | Illinois |
| 67 | Anne E. Horkins | 35 | Lodger | Clerk | Illinois |
| 68 | Anne Miller | 38 | Wife | — | Illinois |
| 69 | Louis Miller | 41 | Head | Sheet Metal Worker | Illinois |
| 70 | Walter Miller | 18 | Son | Messenger | Illinois |
| 71 | Raymond Miller | 12 | Son | — | Illinois |
| 72 | Wilmer Schultz | 43 | Head | Operator | Illinois |
| 73 | Ann Schultz | 36 | Wife | Operator | Penn State |
| 74 | Robert Schultz | 30 | Brother | Clerk | Illinois |
| 75 | Rose E. Hummer | 48 | Head | — | Poland |
| 76 | Alfred Hummer | 18 | Son | Clerk | Illinois |
| 77 | Florence Hummer | 20 | Daughter | Waitress | Illinois |
| 78 | Douglas London | 24 | Son-in-law | Brakeman | Illinois |
| 79 | Rose London | 23 | Daughter | Beauty Operator | Illinois |
| 80 | Gertrude Mcnamara | 51 | Wife | — | Missouri |
Pedigree Summary
Helen
Gen 1 · 4 parents
~0.81
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)