LC
Lois Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Greene-County, Illinois
Our Model Tree links this Lois Clark across the 1930 and 1940 US Censuses in Greene-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 8-person household.
Age 13
b. ~1927
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Greene-County, Illinois |
| Surname | Clark |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | White Hall City |
| 1935 Residence (County) | Greene |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | White Hall City |
| Est. Birth Year | ~1927 |
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 Lois | Age | Birth yr |
|---|---|---|---|---|
| Sheldon Clark | Son | — | 17 | ~1923 |
| Glenn Clark | Son | — | 22 | ~1918 |
| Donald Clark | Son | — | 11 | ~1929 |
| Adaline Clark | Daughter | — | 30 | ~1910 |
| Blanche Clark | Spouse | — | 53 | ~1887 |
| Fern Clark | Daughter | — | 20 | ~1920 |
| Ora Clark | Head | — | 54 | ~1886 |
| Lois Clark | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Greene, Illinois
Daughter, age 3
Greene, Illinois · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | CLARK |
| Given Name | LOIS |
| Relationship to Head | DAUGHTER |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | ILLINOIS |
| Father's Birthplace | ILLINOIS |
| Mother's Birthplace | ILLINOIS |
| Occupation | NONE |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Greene-County, Illinois
Daughter, age 13
Greene-County, Illinois · implied b. ~1927 — 8 household members
| Surname | Clark |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | White Hall City |
| 1935 Residence (County) | Greene |
| Highest Grade | No 7 |
| 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 Lois Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lois Clark
Daughter · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Adaline Clark
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glenn Clark
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sheldon Clark
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Clark
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fern Clark
Sibling · 1940 · age 20
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 — Greene-County, Illinois
Open full size
1940 US Federal Census — Greene-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00808-00494)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cornelius D Clark | 31 | Head | Fireman | Illinois |
| 42 | Lucille Clark | 28 | Wife | — | Illinois |
| 43 | Howard L Kessie | 32 | Head | — | Illinois |
| 44 | Geneva Kessie | 27 | Wife | — | Illinois |
| 45 | Bonnie M Kessie | 5 | Daughter | — | Illinois |
| 46 | Ray O Rector | 37 | Head | — | Illinois |
| 47 | Ilo M Rector | 36 | Wife | — | Illinois |
| 48 | Ora E Clark | 54 | Head | Night Police | Illinois |
| 49 | Blanche Clark | 53 | Wife | — | Illinois |
| 50 | Adaline Clark | 30 | Daughter | Seamstress | Illinois |
| 51 | Glenn Clark | 22 | Son | Labor | Illinois |
| 52 | Fern Clark | 20 | Daughter | Seamstress | Illinois |
| 53 | Sheldon Clark | 17 | Son | — | Illinois |
| 54 | Lois Clark THIS PERSON | 13 | Daughter | — | Illinois |
| 55 | Donald Clark | 11 | Son | — | Illinois |
| 56 | James Kessinger | 61 | Head | — | Illinois |
| 57 | Earl Kessinger | 14 | Son | — | Illinois |
| 58 | Geneva O White | 64 | Head | — | Illinois |
| 59 | Orval B Hayes | 42 | Head | — | Illinois |
| 60 | Alta M Hayes | 25 | Wife | — | Illinois |
| 61 | Edward L Day | 6 | Stepson | — | Illinois |
| 62 | Norma L Day | 12 | Stepdaughter | — | Illinois |
| 63 | Dena Hughes | 60 | Head | — | Illinois |
| 64 | Mary E Hughes | 40 | Wife | — | Illinois |
| 65 | John W Eddy | 71 | Head | — | Missouri |
| 66 | Mary Eddy | 60 | Wife | — | Illinois |
| 67 | Samuel S Eddy | 18 | Son | — | Illinois |
| 68 | John W Mcadams | 55 | Head | — | Illinois |
| 69 | — | None | — | — | — |
| 70 | — | None | — | — | — |
| 71 | Clas Cox | 39 | Head | — | Illinois |
| 72 | Harriet Cox | 31 | Wife | — | Illinois |
| 73 | Russel Cox | 9 | Son | — | Illinois |
| 74 | Betty Cox | 8 | Daughter | — | Illinois |
| 75 | Rosie Cox | 4 | Daughter | — | Illinois |
| 76 | Martha Cox | 1 | Daughter | — | Illinois |
| 77 | Grace Mathews | 34 | Head | Contractor | Illinois |
| 78 | Eva E Mathews | 23 | Wife | — | Illinois |
| 79 | Madge Mathews | 22 | Sister | — | Illinois |
| 80 | — | None | — | — | — |
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)