LC
Lois Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Will-County, Illinois
Our Model Tree links this Lois Clark across the 1930 and 1940 US Censuses in Will-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Will-County, Illinois |
| Surname | Clark |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Kendall |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Sherwood Beach |
| Est. Birth Year | ~1929 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lois | Age | Birth yr |
|---|---|---|---|---|
| Wayne Clark | Son | — | 19 | ~1921 |
| Leo Clark | Head | — | 48 | ~1892 |
| Frances Clark | Spouse | — | 48 | ~1892 |
| Elizabeth Clark | Daughter | — | 13 | ~1927 |
| Lois Clark | Daughter | — | 11 | ~1929 |
| Gerald Clark | Son | — | 18 | ~1922 |
| Leslie Clark | Son | — | 22 | ~1918 |
Census Appearances
1930
Kendall, Illinois
Daughter, age 1
Kendall, Illinois · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Lois M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| 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
Will-County, Illinois
Daughter, age 11
Will-County, Illinois · implied b. ~1929 — 7 household members
| Surname | Clark |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Kendall |
| Highest Grade | No 5 |
| 1935 Residence | Illinois |
| 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 11 · b. ~1929 · Illinois
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Sibling
Leslie Clark
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Clark
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Clark
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Clark
Sibling · 1940 · age 18
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 — Will-County, Illinois
Open full size
1940 US Federal Census — Will-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00909-00868)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Laque | 65 | Head | — | Minnesota |
| 2 | Raymond Laque | 25 | Son | — | Michigan |
| 3 | Ezra Veeck | 47 | Head | Laborer | Michigan |
| 4 | Martha Veeck | 47 | Wife | — | Illinois |
| 5 | Lawrence Veeck | 17 | Son | Fireguard | Illinois |
| 6 | Lois Veeck | 15 | Daughter | — | Illinois |
| 7 | Robert E. Wilhelmi | 22 | Head | Distributor | Illinois |
| 8 | Georgia Wilhelmi | 21 | Wife | — | New York |
| 9 | June Laura Wilhelmi | 2 | Daughter | — | Illinois |
| 10 | E. Robert Wilhelmi | 0 | Son | — | Illinois |
| 11 | Leo Clark | 48 | Head | Laborer | Illinois |
| 12 | Frances Clark | 48 | Wife | — | Illinois |
| 13 | Leslie Clark | 22 | Son | Attendant | Illinois |
| 14 | Wayne Clark | 19 | Son | New Worker | Illinois |
| 15 | Gerald Clark | 18 | Son | — | Illinois |
| 16 | Elizabeth Clark | 13 | Daughter | — | Illinois |
| 17 | Lois Clark THIS PERSON | 11 | Daughter | — | Illinois |
| 18 | Fred Lundstrom | 25 | Head | Molder | Illinois |
| 19 | Harriet Lundstrom | 20 | Wife | — | Illinois |
| 20 | James Kerr | 41 | Head | Laborer | Illinois |
| 21 | Margaret Kerr | 37 | Wife | — | Illinois |
| 22 | James Jr. Kerr | 18 | Son | New Worker | Illinois |
| 23 | Audrey Kerr | 9 | Daughter | — | Illinois |
| 24 | George Kerr | 8 | Son | — | Illinois |
| 25 | Clarence Schmitz | 48 | Head | Steamfitter | Illinois |
| 26 | Cecelia Schmitz | 32 | Wife | — | Illinois |
| 27 | Cecil Lee Schmitz | 11 | Daughter | — | Illinois |
| 28 | Doris Jean Schmitz | 9 | Daughter | — | Illinois |
| 29 | Jean Ann Schmitz | 6 | Daughter | — | Illinois |
| 30 | Clarence Schmitz | 4 | Son | — | Illinois |
| 31 | Ralph Hutchall | 35 | Head | Truck Driver | Illinois |
| 32 | Mildred Hutchall | 33 | Wife | — | Illinois |
| 33 | Janice Hutchall | 11 | Daughter | — | Illinois |
| 34 | Ralph Jr. Hutchall | 9 | Son | — | Illinois |
| 35 | Raymond Hutchall | 7 | Son | — | Illinois |
| 36 | Lois Hutchall | 5 | Daughter | — | Illinois |
| 37 | John C. Muir | 56 | Head | Locomotive Engineer | Illinois |
| 38 | Anna Muir | 54 | Wife | — | Illinois |
| 39 | Frank Muir | 31 | Son | Switchman | Illinois |
| 40 | Sheridan Muir | 29 | Son | Locomotive Fireman | Illinois |
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)