JL
John Lewis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Warren-County, Illinois
Our Model Tree links this John Lewis across the 1920, 1930 and 1940 US Censuses in Warren-County, Illinois (XGBoost, ~Confirmed), with identified parents Clifford & Clifford — first a son (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Warren-County, Illinois |
| Surname | Lewis |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Roseville |
| 1935 Residence (County) | Warren |
| Additional Details | |
| Occupation | Farm Laborer |
| Industry | Farming |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farm Laborer |
| Township / Ward | Roseville |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Josephine Lewis | Daughter | — | 14 | ~1926 |
| Clifford Lewis | Head | — | 49 | ~1891 |
| Earl Lewis | Son | — | 26 | ~1914 |
| John Lewis | Son | — | 20 | ~1920 |
| Josephine Lewis | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Warren, Illinois
Son, age
Warren, Illinois · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Warren, Illinois
Son, age 10
Warren, Illinois · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Warren-County, Illinois
Son, age 20
Warren-County, Illinois · implied b. ~1920 — 5 household members
| Surname | Lewis |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Roseville |
| 1935 Residence (County) | Warren |
| Occupation | Farm Laborer |
| Industry | Farming |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 John Lewis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Clifford Lewis (~0.92 confidence) and father Clifford Lewis (~0.92 confidence) and father Clifford Lewis (~0.92 confidence) and mother Josephine Lewis (~0.92 confidence) and mother Josephine Lewis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Clifford Lewis
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Clifford Lewis
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Clifford Lewis
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Josephine Lewis
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Josephine Lewis
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Lewis
Son · 1940 · age 20 · b. ~1920 · Illinois
★ You are viewing this record
Sibling
Josephine Lewis
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earl Lewis
Sibling · 1940 · age 26
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 — Warren-County, Illinois
Open full size
1940 US Federal Census — Warren-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00901-00506)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carol Kalb | 7 | daughter | — | Illinois |
| 2 | Duane Kalb | 6 | Son | — | Illinois |
| 3 | Theodore Kalb | 4 | Son | — | Illinois |
| 4 | William Kalb | 1 | Son | — | Illinois |
| 5 | George E. White | 48 | Head | Farmer | Illinois |
| 6 | Maude White | 45 | wife | — | Illinois |
| 7 | Helen White | 17 | daughter | — | Illinois |
| 8 | Erma White | 13 | daughter | — | Illinois |
| 9 | Henry Snyder | 54 | Laborer | Farm Laborer | Pennsylvania |
| 10 | Charles Elliott | 28 | Head | Farm Laborer | Illinois |
| 11 | Clark Tinkham | 23 | Brother in L | Public Trucker | Illinois |
| 12 | Arlene Tinkham | 24 | sister | — | Illinois |
| 13 | Leland G. Brooks | 38 | Head | Farmer | Illinois |
| 14 | Mae S. Brooks | 34 | wife | — | Illinois |
| 15 | Leland G. Brooks | 12 | son | — | Illinois |
| 16 | Robert T. Brooks | 6 | son | — | Illinois |
| 17 | Wendell L. Brooks | 5 | son | — | Illinois |
| 18 | Axel T. Johnson | 65 | Head | Farmer | Sweden |
| 19 | Alma Johnson | 60 | wife | — | Illinois |
| 20 | Kenneth Johnson | 25 | son | Farm Laborer | Illinois |
| 21 | Cecil P. Holford | 35 | Head | Apprentice Cutter | Illinois |
| 22 | Mary Holford | 34 | wife | — | Illinois |
| 23 | David Holford | 13 | son | — | Illinois |
| 24 | Katherine Holford | 12 | daughter | — | Illinois |
| 25 | Donald Holford | 8 | son | — | Illinois |
| 26 | Delwin Holford | 4 | son | — | Illinois |
| 27 | Marjorie Holford | 3 | daughter | — | Illinois |
| 28 | Elizabeth Holford | 79 | mother | — | Illinois |
| 29 | Clifford B. Lewis | 49 | Head | Farmer | Illinois |
| 30 | Josephine Lewis | 55 | wife | — | Illinois |
| 31 | Earl Lewis | 26 | son | Farm Laborer | Illinois |
| 32 | John Lewis THIS PERSON | 20 | son | Farm Laborer | Illinois |
| 33 | Josephine Lewis | 14 | daughter | — | Illinois |
| 34 | Fred M. Shimmins | 46 | Head | Farmer | Illinois |
| 35 | Mabel Shimmins | 45 | wife | — | Illinois |
| 36 | Cecil Shimmins | 16 | son | — | Illinois |
| 37 | Virgil T. Lay | 23 | Laborer | Farm Laborer | Missouri |
| 38 | Lewis I. Van Tassel | 68 | Head | Farmer | Illinois |
| 39 | Charles W. Van Tassel | 25 | son | Farm Laborer | Illinois |
| 40 | Alta B. Van Tassel | 17 | daughter | — | Illinois |
Related Census Records
Pedigree Summary
John + 2 siblings
Gen 1 · 5 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)