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Mildred Lewis — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this Mildred Lewis across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed), with identified parents James & Mary — first a daughter (b.~1906), then head of a 12-person household.
Age 34
b. ~1906
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Lewis |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East St. Louis |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Gas Co |
| Class of Worker | PW |
| Hours Worked | 7 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Bookkeeper |
| Township / Ward | East St Louis |
| Est. Birth Year | ~1906 |
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 Mildred | Age | Birth yr |
|---|---|---|---|---|
| Mary Lewis | Daughter | — | 30 | ~1910 |
| James Lewis | Son | — | 27 | ~1913 |
| Mildred Lewis | Daughter | — | 34 | ~1906 |
| George Lewis | Son | — | 20 | ~1920 |
| William Fields | Other | — | 69 | ~1871 |
| Mary Lewis | Spouse | — | 56 | ~1884 |
| Betty Lewis | Daughter | — | 14 | ~1926 |
| James Lewis | Head | — | 58 | ~1882 |
| Virginia Lewis | Daughter | — | 22 | ~1918 |
| Alice Lewis | Daughter | — | 36 | ~1904 |
| Frank Lewis | Son | — | 16 | ~1924 |
| Thomas Lewis | Son | — | 17 | ~1923 |
Census Appearances
1920
St Clair, …
Daughter, age 14
St Clair, Illinois · implied b. ~1906 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Mildred E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Clair, …
Daughter, age 24
St Clair, Illinois · implied b. ~1906 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Daughter, age 34
St.-Clair-County, Illinois · implied b. ~1906 — 12 household members
| Surname | Lewis |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East St. Louis |
| 1935 Residence (County) | St. Clair |
| Occupation | Bookkeeper |
| Industry | Gas Co |
| Class of Worker | PW |
| Hours Worked | 7 |
| Highest Grade | H 4 |
| 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 Mildred Lewis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Lewis (~0.92 confidence) and mother Mary Lewis (~0.92 confidence) and mother Stella Lewis (~0.92 confidence) and mother Estella Lewis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Lewis
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Mary Lewis
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Stella Lewis
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Estella Lewis
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mildred Lewis
Daughter · 1940 · age 34 · b. ~1906 · Illinois
★ You are viewing this record
Sibling
Virginia Lewis
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Lewis
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Lewis
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Lewis
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Lewis
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Lewis
Sibling · 1940 · age 36
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Lewis
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lewis
Sibling · 1940 · age 17
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-t0627-00880-00714)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Josie Mcgee | 61 | Wife | — | Missouri |
| 42 | Marvin Mcgee | 36 | Son | Farmer | Missouri |
| 43 | Edgar Ross | 41 | Boarder | Engineer | Missouri |
| 44 | Betty Ross | 15 | Granddaughter | — | Illinois |
| 45 | Raymond Smith | 29 | Lodger | Crane Man | Illinois |
| 46 | Head James | None | M | Construction | — |
| 47 | Robert O. Lemen | 57 | Head | Vice President | Illinois |
| 48 | Loretta Lemen | 57 | Wife | Stenographer | Illinois |
| 49 | Robert Jr. Lemen | 23 | Son | Steerman | Illinois |
| 50 | James Lewis | 58 | Head | Butcher | Ohio |
| 51 | Mary Lewis | 56 | Wife | — | Illinois |
| 52 | Alice Lewis | 36 | Daughter | Clerk | Illinois |
| 53 | Mildred Lewis THIS PERSON | 34 | Daughter | Bookkeeper | Illinois |
| 54 | Mary Lewis | 30 | Daughter | Clerk | Illinois |
| 55 | James Lewis | 27 | Son | Steamfitter | Illinois |
| 56 | Virginia Lewis | 22 | Daughter | — | Illinois |
| 57 | George Lewis | 20 | Son | News Worker | Illinois |
| 58 | Thomas Lewis | 17 | Son | — | Illinois |
| 59 | Frank Lewis | 16 | Son | — | Illinois |
| 60 | Betty Jean Lewis | 14 | Daughter | — | Illinois |
| 61 | William Fields | 69 | Brother in law | Watchman | Indiana |
| 62 | Charles H. Martin | 49 | Head | Roading Engineer | Illinois |
| 63 | Ruth Martin | 42 | Wife | — | Illinois |
| 64 | Charles Ewing | 77 | Head | Owner | Illinois |
| 65 | Eleanor M. Ewing | 62 | Wife | — | England |
| 66 | Ata L. Housh | 66 | Head | Medical Surgeon | Illinois |
| 67 | Clara B. Housh | 60 | Wife | — | Mississippi |
| 68 | Nelson B. Housh | 27 | Son | Salesman | Illinois |
| 69 | Joseph Payne | 63 | Head | Carpenter | Illinois |
| 70 | May Payne | 47 | Wife | — | Illinois |
| 71 | Morris Payne | 20 | Son | News Worker Employee | Illinois |
| 72 | Dorothy Payne | 18 | Daughter | — | Missouri |
| 73 | Jos. Jr. Payne | 14 | Son | — | Illinois |
| 74 | Dale Payne | 9 | Son | — | Missouri |
| 75 | Samuel Pryor | 60 | Head | Switchman | Texas |
| 76 | Bertha Pryor | 48 | Wife | — | Missouri |
| 77 | Brown Gillham | 35 | Head | Inspector | Illinois |
| 78 | Nell Gillham | 31 | Wife | — | Illinois |
| 79 | Billy Gillham | 6 | Son | — | Illinois |
| 80 | Johnny Gillham | 3 | Son | — | Illinois |
Pedigree Summary
Mildred + 8 siblings
Gen 1 · 4 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)