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William Lewis — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this William Lewis across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Mary — first a son (b.~1913), then head of a 3-person household.
Age 27
b. ~1913
Male
Son
Born: Mississippi
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Lewis |
| Given Name | William E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | East St Louis |
| 1935 Residence (County) | St Clair |
| Additional Details | |
| Occupation | Janitor |
| Industry | Journal Building |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 720 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Occupation | Janitor |
| Township / Ward | East St Louis |
| Est. Birth Year | ~1913 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Thelma Lewis | Daughter | — | 31 | ~1909 |
| Mary Lewis | Head | — | 50 | ~1890 |
| William Lewis | Son | — | 27 | ~1913 |
Census Appearances
Son, age 6
St Clair, Illinois · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Willie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1930
St Clair, …
Son, age 16
St Clair, Illinois · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | William E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Can Read/Write | Yes |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
St.-Clair-County, Illinois
Son, age 27
St.-Clair-County, Illinois · implied b. ~1913 — 3 household members
| Surname | Lewis |
| Given Name | William E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | East St Louis |
| 1935 Residence (County) | St Clair |
| Occupation | Janitor |
| Industry | Journal Building |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 720 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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 William Lewis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Lewis (~0.92 confidence) and mother Mary Lewis (~0.92 confidence) and mother Mary Lewis (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Lewis
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Mary Lewis
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Mary Lewis
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Lewis
Son · 1940 · age 27 · b. ~1913 · Illinois
★ You are viewing this record
Sibling
Thelma Lewis
Sibling · 1940 · age 31
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 — St.-Clair-County, Illinois
Open full size
1940 US Federal Census — St.-Clair-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00880-00960)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose Myers | 40 | Wife | Maid | Illinois |
| 42 | Leona Myers | 22 | Daughter | Maid | Illinois |
| 43 | Anthony Bush | 32 | Head | Butcher | Mississippi |
| 44 | Clara Bush | 66 | Mother | — | Mississippi |
| 45 | George Bush | 14 | Nephew | — | Oklahoma |
| 46 | Mary Lewis | 50 | Head | Nut Picker | Mississippi |
| 47 | Thelma Pearl Lewis | 31 | Daughter | Maid | Mississippi |
| 48 | William E. Lewis THIS PERSON | 27 | Son | Janitor | Mississippi |
| 49 | Viola Williams | 35 | Head | Housemaid | Mississippi |
| 50 | Jacqueline Daniels | 7 | Niece | — | Illinois |
| 51 | Barbara Daniels | 5 | Niece | — | Illinois |
| 52 | Lillian Mae Wallace | 30 | Head | Sewing | Illinois |
| 53 | James Wallace | 11 | Son | — | Illinois |
| 54 | Orville Gray | 47 | Head | Housework | Illinois |
| 55 | Alonzo Gray | 16 | Son | Waitress | Missouri |
| 56 | Hattie Gray | 23 | Daughter | Teacher | Missouri |
| 57 | William Block | 19 | Boarder | — | Missouri |
| 58 | Louie Logan | 51 | Head | — | Alabama |
| 59 | — | None | — | — | — |
| 60 | Troy Morgan | 46 | Head | Machinist | Illinois |
| 61 | Ella Morgan | 50 | Wife | — | Illinois |
| 62 | John Skelly | 42 | Boarder | Mechanic | Indiana |
| 63 | Etta Adams | 52 | Head | Clerical | Illinois |
| 64 | Isabelle Goring | 41 | Head | — | Mississippi |
| 65 | Robert Sharpe | 40 | Head | Laborer | Mississippi |
| 66 | Alberta Sharpe | 34 | Wife | — | Oklahoma |
| 67 | Douglass Walker | 37 | Head | Laborer | Arkansas |
| 68 | Hattie Walker | 37 | Wife | Maid | Arkansas |
| 69 | James Mckenzie | 14 | Head | Laborer | Tennessee |
| 70 | Sarah Mckenzie | 2 | Daughter | — | Arkansas |
| 71 | Lenola Mckenzie | 0 | Daughter | — | Illinois |
| 72 | David Robinson | 37 | Head | Laborer | Oklahoma |
| 73 | Marie Robinson | 27 | Wife | — | Arkansas |
| 74 | Floyd Newman | 30 | Head | Laborer | Illinois |
| 75 | Mattie Newman | 24 | Wife | — | Illinois |
| 76 | Lindsay Newman | 5 | Son | — | Illinois |
| 77 | Dorthea Pope | 39 | Roomer | Maid | Mississippi |
| 78 | Arthur Joseph | 39 | Head | Big 4-R.R. | Louisiana |
| 79 | Myrtle Joseph | 36 | Wife | — | Louisiana |
| 80 | Alice Mae Joseph | 18 | Daughter | New Worker | Louisiana |
Related Census Records
Pedigree Summary
William + 1 sibling
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)