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Barbara Davis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Barbara Davis across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 10-person household.
Age 20
b. ~1920
Female
Daughter
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Davis |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Singer |
| Industry | Theatrical |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 625 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Singer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1920 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Barbara | Age | Birth yr |
|---|---|---|---|---|
| William Davis | Head | — | 48 | ~1892 |
| Mattie Davis | Spouse | — | 47 | ~1893 |
| Barbara Davis | Daughter | — | 20 | ~1920 |
| Fred Davis | Son | — | 12 | ~1928 |
| Clifford Davis | Son | — | 15 | ~1925 |
| Helen Davis | Daughter | — | 10 | ~1930 |
| Edward Davis | Son | — | 16 | ~1924 |
| Kenneth Davis | Son | — | 8 | ~1932 |
| Earl Davis | Son | — | 5 | ~1935 |
| George Davis | Son | — | 6 | ~1934 |
Census Appearances
1930
Cook, Illinois
Daughter, age 10
Cook, Illinois · implied b. ~1920 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Cook-County, Illinois
Daughter, age 20
Cook-County, Illinois · implied b. ~1920 — 10 household members
| Surname | Davis |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Singer |
| Industry | Theatrical |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 625 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Barbara Davis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Barbara Davis
Daughter · 1940 · age 20 · b. ~1920 · Illinois
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Sibling
Clifford Davis
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earl Davis
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Davis
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Davis
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Davis
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Davis
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Davis
Sibling · 1940 · age 8
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 — 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-t0627-00928-00022)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William A. Davis | 48 | Head | Laborer | Louisiana |
| 2 | Mattie Davis | 47 | Wife | — | Louisiana |
| 3 | Barbara Davis THIS PERSON | 20 | Daughter | Singer | Louisiana |
| 4 | Edward Davis | 16 | Son | New Worker | Illinois |
| 5 | Clifford Davis | 15 | Son | — | Illinois |
| 6 | Fred Davis | 12 | Son | — | Illinois |
| 7 | Helen Davis | 10 | Daughter | — | Illinois |
| 8 | Kenneth Davis | 8 | Son | — | Illinois |
| 9 | George Davis | 6 | Son | — | Illinois |
| 10 | Earl Davis | 5 | Son | — | Illinois |
| 11 | Lewis Rice | 49 | Head | General Helper | Mississippi |
| 12 | Mamie Rice | 41 | Wife | — | Tennessee |
| 13 | Earnestine Rice | 15 | Daughter | — | Tennessee |
| 14 | Milton Buford | 26 | Partner | Maid | Tennessee |
| 15 | Lizzie Buford | 34 | Partner | Maid | Alabama |
| 16 | William Mckinley | 37 | Head | Laborer | Mississippi |
| 17 | Ruby Mckinley | 33 | Wife | — | Mississippi |
| 18 | Mamie Mckinley | 18 | Daughter | — | Mississippi |
| 19 | Bessie Mathews | 16 | Daughter | — | Illinois |
| 20 | Sylvester Mathews | 1 | Son | — | Illinois |
| 21 | Mildred Mathews | 2 | Daughter | — | Illinois |
| 22 | Bernadine Mathews | 0 | Daughter | — | Illinois |
| 23 | Joseph Blunt | 26 | Head | Laborer | Florida |
| 24 | Robbie Blunt | 42 | Wife | — | Mississippi |
| 25 | James Bailey | 20 | Lodger | New Worker | Mississippi |
| 26 | Thomas Green | 38 | Head | Janitor | Tennessee |
| 27 | Pearl Wilson | 33 | Lodger | Maid | Mississippi |
| 28 | Lawrence Wilson | 4 | Son | — | Illinois |
| 29 | Jessie Williams | 28 | Lodger | Porter | Texas |
| 30 | Eliza Jacobs | 36 | Lodger | Maid | Mississippi |
| 31 | Allen Thomas | 28 | Head | Laborer | Georgia |
| 32 | Carrie Thomas | 28 | Wife | — | Mississippi |
| 33 | Delores Thomas | 10 | Daughter | — | Illinois |
| 34 | Willie Duncan | 32 | Head | Porter | Alabama |
| 35 | Clotie Duncan | 27 | Wife | — | Mississippi |
| 36 | Wilma Duncan | 9 | Daughter | — | Illinois |
| 37 | William Duncan | 8 | Son | — | Illinois |
| 38 | Marie Duncan | 6 | Daughter | — | Illinois |
| 39 | Alberta Daniel | 27 | Lodger | Seamstress | Alabama |
| 40 | Mary Daniel | 5 | Daughter | — | Alabama |
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)