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Theodore Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Theodore Williams across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Wash & Ida — first a son (b.~1915), then head of a 8-person household.
Age 25
b. ~1915
Male
Son
Born: Louisiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Williams |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Picture Framer |
| Industry | Framing Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Picture Framer |
| Township / Ward | Chicago |
| Est. Birth Year | ~1915 |
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 Theodore | Age | Birth yr |
|---|---|---|---|---|
| Ida Williams | Head | — | 65 | ~1875 |
| Geneva Williams | Other | — | 23 | ~1917 |
| Theodore Williams | Son | — | 25 | ~1915 |
| George Williams | Other | — | 14 | ~1926 |
| Leander Williams | Son | — | 49 | ~1891 |
| Elizabeth Williams | Other | — | 12 | ~1928 |
| Ellen Williams | Daughter | — | 33 | ~1907 |
| Helen Williams | Other | — | 10 | ~1930 |
Census Appearances
1920
Cook, Illinois
Son, age 7
Cook, Illinois · implied b. ~1913
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Williams |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1930
Cook, Illinois
Son, age 17
Cook, Illinois · implied b. ~1913 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Porter |
| Industry | Drug Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Cook-County, Illinois
Son, age 25
Cook-County, Illinois · implied b. ~1915 — 8 household members
| Surname | Williams |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Picture Framer |
| Industry | Framing Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | Hs 1 |
| 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 Theodore Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Wash Williams (~0.92 confidence) and mother Ida Williams (~0.92 confidence) and mother Ida Williams (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Wash Williams
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Ida Williams
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Ida Williams
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Theodore Williams
Son · 1940 · age 25 · b. ~1915 · Illinois
★ You are viewing this record
Sibling
Leander Williams
Sibling · 1940 · age 49
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Williams
Sibling · 1940 · age 33
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-t0627-00931-00085)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Jr. Scott | 14 | Son | — | Illinois |
| 42 | Lottie Scott | 12 | Daughter | — | Illinois |
| 43 | Leander Scott | 11 | Son | — | Illinois |
| 44 | Anna Scott | 8 | Daughter | — | Illinois |
| 45 | Rowena Montgomery | 33 | Lodger | — | Tennessee |
| 46 | Rosie Johnson | 50 | Head | — | Mississippi |
| 47 | Ruby Johnson | 12 | Daughter | — | Illinois |
| 48 | Lucy Earley | 64 | Sister | Seamstress | Mississippi |
| 49 | Herbert Banks | 59 | Head | Night Watchman | Colorado |
| 50 | Callie Banks | 59 | Wife | — | Tennessee |
| 51 | Willie Belle Clark | 32 | Daughter | — | Tennessee |
| 52 | Joseph Clark | 20 | Grandson | Laborer | Illinois |
| 53 | James Clark | 17 | Grandson | Grocery Clerk | Illinois |
| 54 | Jannette Clark | 15 | Granddaughter | — | Illinois |
| 55 | Jane Clark | 13 | Granddaughter | — | Illinois |
| 56 | Hattie Hinton | 84 | Lodger | — | D.C. |
| 57 | Jack Valcarne | 72 | Lodger | Odd Jobs | Montana |
| 58 | James Harris | 56 | Head | Laborer | Mississippi |
| 59 | Callie Harris | 44 | Wife | — | No. Carolina |
| 60 | Margie Harris | 18 | Niece | — | Illinois |
| 61 | Edwina Harris | 12 | Niece | — | Illinois |
| 62 | Ida Williams | 65 | Head | — | Mississippi |
| 63 | Ellen Williams | 33 | Daughter | Maid | Louisiana |
| 64 | Theodore Williams THIS PERSON | 25 | Son | Picture Framer | Louisiana |
| 65 | Leander Williams | 49 | Son | Laborer | Mississippi |
| 66 | Geneva Williams | 23 | Daughter-in-law | Maid | Illinois |
| 67 | George Williams | 14 | Grandson | — | Illinois |
| 68 | Elizabeth Williams | 12 | Granddaughter | — | Illinois |
| 69 | Helen Williams | 10 | Granddaughter | — | Illinois |
| 70 | Henry Blackwell | 38 | Head | Laborer | Georgia |
| 71 | Willa M. Blackwell | 33 | Wife | — | Georgia |
| 72 | Henry Jr. Blackwell | 16 | Son | — | Illinois |
| 73 | Sarah Blackwell | 12 | Daughter | — | Illinois |
| 74 | Josephine Harper | 36 | Sister | — | Georgia |
| 75 | Daughtery Blackwell | 65 | Father | — | Georgia |
| 76 | Henry Harper | 17 | Nephew | — | Georgia |
| 77 | Travis Harper | 15 | Nephew | — | New Jersey |
| 78 | Rosella Harper | 12 | Niece | — | New Jersey |
| 79 | Sarah Lillie Harper | 11 | Niece | — | New Jersey |
| 80 | Hannah Williams | 46 | Head | — | Georgia |
Pedigree Summary
Theodore + 2 siblings
Gen 1 · 3 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)