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Lester Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Illinois
Our Model Tree links this Lester Williams across the 1910, 1920, 1930 and 1940 US Censuses in Jefferson-County, Illinois (XGBoost, ~Confirmed), with identified parents Jas & Otis — first a head (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Illinois |
| Surname | Williams |
| Given Name | Lester |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Mt. Vernon City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Cutter |
| Industry | Shoe Factory |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 496 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Cutter |
| Township / Ward | Mt Vernon City |
| Est. Birth Year | ~1909 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lester | Age | Birth yr |
|---|---|---|---|---|
| Lester Williams | Head | — | 31 | ~1909 |
| Jerry Williams | Son | — | 7 | ~1933 |
| Ruby Williams | Spouse | — | 31 | ~1909 |
| Alice Hayes | Other | — | 17 | ~1923 |
Census Appearances
1910
Jefferson, Illinois
Son, age 1
Jefferson, Illinois · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Lester M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Jefferson, Illinois
Son, age 11
Jefferson, Illinois · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Lester |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Jefferson, Illinois
Son, age 21
Jefferson, Illinois · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Lester M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Hand Cutter |
| Industry | Shoe Mfg Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Jefferson-County, Illinois
Head, age 31
Jefferson-County, Illinois · implied b. ~1909 — 4 household members
| Surname | Williams |
| Given Name | Lester |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Mt. Vernon City |
| 1935 Residence (County) | Jefferson |
| Occupation | Cutter |
| Industry | Shoe Factory |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 496 |
| Highest Grade | H 1 |
| 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 Lester Williams across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jas Williams (~0.92 confidence) and father Otis Williams (~0.92 confidence) and father Otto Williams (~0.92 confidence) and mother Eva Williams (~0.92 confidence) and mother Ora Williams (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jas Williams
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Otis Williams
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Otto Williams
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Eva Williams
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Ora Williams
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lester Williams
Head · 1940 · age 31 · b. ~1909 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Jefferson-County, Illinois
Open full size
1940 US Federal Census — Jefferson-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00816-00500)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Raymond Hitchcock | 30 | Son | Laborer | Illinois |
| 2 | Ethel Keller | 57 | Sister | — | Illinois |
| 3 | Owen Rosenburg | 26 | Head | Electrician | Illinois |
| 4 | Marie Rosenburg | 28 | Wife | Bookkeeper | Illinois |
| 5 | Frank Welborn | 28 | Head | Mail Clerk | Illinois |
| 6 | Annie Welborn | 57 | Wife | — | Illinois |
| 7 | Harry Bates | 61 | Head | Time Keeper | Illinois |
| 8 | Blanche Bates | 56 | Wife | — | Illinois |
| 9 | Helen Bates | 27 | Daughter | Teacher | Illinois |
| 10 | Sophia Alvitt | 61 | Head | Sewing | Illinois |
| 11 | Lester Williams THIS PERSON | 31 | Head | Cutter | Illinois |
| 12 | Ruby Williams | 31 | Wife | Laborer | Illinois |
| 13 | Jerry Bob Williams | 7 | Son | — | Illinois |
| 14 | Alice Hayes | 17 | Sister | House Keeper | Illinois |
| 15 | Sophia Coyal | 48 | Head | — | Illinois |
| 16 | Kathryn Coyal | 24 | Daughter | Stenographer | Illinois |
| 17 | William Coyal | 15 | Son | — | Illinois |
| 18 | Harley Warren | 57 | Brother | Clerk | Illinois |
| 19 | Oscar Warren | 46 | Brother | Clerk | Illinois |
| 20 | Nellie Shuffer | 62 | Head | — | Illinois |
| 21 | Frank Ford | 89 | Father | — | Illinois |
| 22 | Harold Rootman | 37 | Head | Line Man | Illinois |
| 23 | Amy Rootman | 34 | Wife | — | Illinois |
| 24 | Amy Louise Rootman | 12 | Daughter | — | Illinois |
| 25 | Evelyn Rootman | 11 | Daughter | — | Illinois |
| 26 | Doris Rootman | 8 | Son | — | Illinois |
| 27 | Robert Rootman | 6 | Son | — | Illinois |
| 28 | Raleigh Riggs | 35 | Head | Welding | Illinois |
| 29 | Corinne Riggs | 31 | Wife | — | Illinois |
| 30 | Raleigh Riggs | 4 | Daughter | — | Illinois |
| 31 | W. H. Arnold | 57 | Head | Salesman | Tennessee |
| 32 | Hannie Arnold | 57 | Wife | — | Illinois |
| 33 | Newell Arnold | 11 | Son | — | Illinois |
| 34 | J. T. Headley | 84 | Father | — | Indiana |
| 35 | Paul Jones | 34 | Head | Salesman | Indiana |
| 36 | Dorothy Jones | 30 | Wife | — | Indiana |
| 37 | Diane Jones | 7 | Son | — | Illinois |
| 38 | W. J. Prock | 34 | Head | Engineer | Oklahoma |
| 39 | Mina Prock | 30 | Wife | — | Oklahoma |
Pedigree Summary
Lester
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)