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Ollie Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Ollie Williams across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 12-person household.
Age 14
b. ~1926
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Williams |
| Given Name | Ollie Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Industry | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1926 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ollie | Age | Birth yr |
|---|---|---|---|---|
| Ella Robinson | Other | — | 55 | ~1885 |
| Jerry Williams | Son | — | 3 | ~1937 |
| Edna Williams | Daughter | — | 4 | ~1936 |
| Harry Williams | Son | — | 12 | ~1928 |
| Minnie Williams | Spouse | — | 45 | ~1895 |
| David Tankson | Other | — | 49 | ~1891 |
| Willie Williams | Other | — | 19 | ~1921 |
| John Hicks | Other | — | 70 | ~1870 |
| Ollie Williams | Son | — | 14 | ~1926 |
| Ollie Williams | Head | — | 38 | ~1902 |
| Jessie Tankson | Daughter | — | 21 | ~1919 |
| Annie Hicks | Other | — | 55 | ~1885 |
Census Appearances
1930
Cook, Illinois
Son, age 3
Cook, Illinois · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Olie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 14
Cook-County, Illinois · implied b. ~1926 — 12 household members
| Surname | Williams |
| Given Name | Ollie Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Industry | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| 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 Ollie Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ollie Williams
Son · 1940 · age 14 · b. ~1926 · Illinois
★ You are viewing this record
Sibling
Jerry Williams
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Williams
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jessie Tankson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Williams
Sibling · 1940 · age 4
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-t0627-00977-00629)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isolona Walker | 11 | daughter | — | Illinois |
| 2 | Dorsey Baker | 39 | Head | Land Grader | Georgia |
| 3 | Myrtle Q. Baker | 35 | Wife | Cutter | Tennessee |
| 4 | Cora Johnson | 40 | Mother-in-law | — | Tennessee |
| 5 | Rephus Johnson | 9 | Nephew | — | Illinois |
| 6 | Laura Mae Johnson | 6 | Niece | — | Illinois |
| 7 | Robert Johnson | 3 | Nephew | — | Illinois |
| 8 | Beatrice Davis | 24 | Lodger | — | Tennessee |
| 9 | Lloyd Davis | 5 | Lodger | — | Illinois |
| 10 | Lenora Davis | 3 | Daughter | — | Illinois |
| 11 | Carrie E. Lewis | 41 | Head | Maid | Missouri |
| 12 | Acisclo C. Sabar | 45 | Lodger | Bus Boy | Philippines |
| 13 | Frank Davis | 35 | Roomer | Personal Servant | Tennessee |
| 14 | Isabelle Williams | 25 | Lodger | — | Alabama |
| 15 | William Colbert | 25 | Lodger | Selling Pies | Alabama |
| 16 | Grace Bell | 21 | Lodger | — | Illinois |
| 17 | Julius Walton | 34 | Lodger | — | Arkansas |
| 18 | Idella Mitchell | 21 | Lodger | Power Machine Operator | Alabama |
| 19 | Delores Williams | 5 | Daughter | — | Illinois |
| 20 | Florence Frazier | 59 | Head | Watchman | Iowa |
| 21 | Willie Frazier | 58 | Wife | — | Missouri |
| 22 | Elmer Murphy | 26 | Lodger | Laborer | Mississippi |
| 23 | Lillie Murphy | 24 | Lodger | — | Alabama |
| 24 | Thomas Shields | 17 | Lodger | Breaks Asphalt | Alabama |
| 25 | Thomas Shields | 5 | Son | — | Illinois |
| 26 | Elizabeth Jackson | 40 | Head | — | Mississippi |
| 27 | Annie Woods | 19 | Daughter | — | Missouri |
| 28 | Ollie Williams | 38 | Head | Hiker | Texas |
| 29 | Minnie L. Williams | 45 | Wife | — | Alabama |
| 30 | Ollie Jr. Williams THIS PERSON | 14 | Son | — | Illinois |
| 31 | Harry A. Williams | 12 | Son | — | Illinois |
| 32 | Edna Josephine Williams | 4 | Daughter | — | Illinois |
| 33 | David Tankson | 49 | Lodger | — | Missouri |
| 34 | Jessie Mae Tankson | 21 | Daughter | — | Texas |
| 35 | John Hicks | 70 | Lodger | — | Florida |
| 36 | Annie Hicks | 55 | Lodger | — | Florida |
| 37 | Ella Robinson | 55 | Lodger | — | Tennessee |
| 38 | Willie Mae Williams | 19 | Lodger | — | Arkansas |
| 39 | Jerry Williams | 3 | Son | — | Illinois |
| 40 | Eli Bowden | 53 | Head | — | Georgia |
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)