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Alma Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Alma Williams across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 8-person household.
Age 20
b. ~1920
Female
Daughter
Born: Connecticut
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Williams |
| Given Name | Alma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Connecticut |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | new worker |
| Class of Worker | U |
| Hours Worked | 16 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
| Occupation | New Worker |
| Township / Ward | Chicago |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Alma | Age | Birth yr |
|---|---|---|---|---|
| William Williams | Head | — | 49 | ~1891 |
| Bettina Williams | Daughter | — | 19 | ~1921 |
| Earl Williams | Son | — | 17 | ~1923 |
| Harold Williams | Son | — | 16 | ~1924 |
| Lucille Williams | Daughter | — | 15 | ~1925 |
| Carl Williams | Son | — | 13 | ~1927 |
| Alma Williams | Daughter | — | 20 | ~1920 |
| Dolcie Williams | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Cook, Illinois
Daughter, age 10
Cook, Illinois · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Alma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Connecticut |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1940
Cook-County, Illinois
Daughter, age 20
Cook-County, Illinois · implied b. ~1920 — 8 household members
| Surname | Williams |
| Given Name | Alma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Connecticut |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | new worker |
| Class of Worker | U |
| Hours Worked | 16 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
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 Alma Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Alma Williams
Daughter · 1940 · age 20 · b. ~1920 · Illinois
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Sibling
Earl Williams
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bettina Williams
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Williams
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Williams
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Williams
Sibling · 1940 · age 16
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-t0627-00933-00308)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Laura Gamble | 37 | Wife | — | Mississippi |
| 2 | Edna Gamble | 14 | Daughter | — | Illinois |
| 3 | Margaret Gamble | 11 | Daughter | — | Illinois |
| 4 | Clifton Gamble | 9 | Son | — | Illinois |
| 5 | Evelyn Gamble | 7 | Daughter | — | Illinois |
| 6 | Sadora Gamble | 5 | Daughter | — | Illinois |
| 7 | William Williams | 49 | Head | Painter | North Carolina |
| 8 | Dolcie Williams | 46 | Wife | — | Virginia |
| 9 | Alma Williams THIS PERSON | 20 | Daughter | New Worker | Connecticut |
| 10 | Bettina Williams | 19 | Daughter | New Worker | Connecticut |
| 11 | Earl Williams | 17 | Son | — | Connecticut |
| 12 | Harold Williams | 16 | Son | — | Illinois |
| 13 | Lucille Williams | 15 | Daughter | — | Illinois |
| 14 | Carl Williams | 13 | Son | — | Illinois |
| 15 | William Harden | 37 | Head | Laborer | Georgia |
| 16 | Madara Harden | 38 | Wife | — | Mississippi |
| 17 | Henrietta Harden | 8 | Daughter | — | Illinois |
| 18 | William Harden | 6 | Son | — | Illinois |
| 19 | Ann Harden | 2 | Daughter | — | Illinois |
| 20 | Lewis Hill | 35 | Head | Postal Clerk | Alabama |
| 21 | Aline Hill | 29 | Wife | — | Mississippi |
| 22 | Lonnie Moore | 50 | Head | Laborer | Alabama |
| 23 | Idola Moore | 50 | Wife | — | Florida |
| 24 | Irene Moore | 13 | Daughter | — | Illinois |
| 25 | Robert W. Chandler | 66 | Head | — | Georgia |
| 26 | Mary Jane Chandler | 64 | Wife | — | Illinois |
| 27 | Louis Brown | 24 | Head | Maid | Illinois |
| 28 | Lynwood Brown | 5 | Son | — | Illinois |
| 29 | Elizabeth Johnson | 57 | Aunt | — | Missouri |
| 30 | William Hyton | 62 | Lodger | — | Illinois |
| 31 | George Elam | 35 | Head | — | Missouri |
| 32 | Georgia Elam | 32 | Wife | — | Missouri |
| 33 | Barbara Elam | 15 | Daughter | — | Missouri |
| 34 | Shirley Elam | 10 | Daughter | — | Illinois |
| 35 | George Jr. Elam | 6 | Son | — | Illinois |
| 36 | Charles Elam | 5 | Son | — | Illinois |
| 37 | Ronald Elam | 3 | Son | — | Illinois |
| 38 | Claudette Elam | 1 | Daughter | — | Illinois |
| 39 | Charles Harper | 54 | Head | — | Tennessee |
| 40 | Julia Harper | 36 | Wife | — | Tennessee |
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)