MW
Mildred Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clark-County, Illinois
Our Model Tree links this Mildred Williams across the 1930 and 1940 US Censuses in Clark-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 10-person household.
Age 22
b. ~1918
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clark-County, Illinois |
| Surname | Williams |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Anderson Twp |
| 1935 Residence (County) | Clark |
| Additional Details | |
| Occupation | house work |
| Industry | house keeper |
| Class of Worker | NP |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | House Work |
| Township / Ward | Anderson Twp |
| Est. Birth Year | ~1918 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mildred | Age | Birth yr |
|---|---|---|---|---|
| Velma Williams | Daughter | — | 14 | ~1926 |
| Ruth Williams | Daughter | — | 10 | ~1930 |
| Marilyn Williams | Daughter | — | 1 | ~1939 |
| Mildred Williams | Daughter | — | 22 | ~1918 |
| Doris Williams | Daughter | — | 16 | ~1924 |
| Irene Williams | Daughter | — | 19 | ~1921 |
| Oleie Williams | Daughter | — | 7 | ~1933 |
| Otis Williams | Head | — | 41 | ~1899 |
| Otis Williams | Son | — | 3 | ~1937 |
| Clara Williams | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Clark, Illinois
Daughter, age 12
Clark, Illinois · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Mildred M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| 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
Clark-County, Illinois
Daughter, age 22
Clark-County, Illinois · implied b. ~1918 — 10 household members
| Surname | Williams |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Anderson Twp |
| 1935 Residence (County) | Clark |
| Occupation | house work |
| Industry | house keeper |
| Class of Worker | NP |
| Highest Grade | No 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 Mildred Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mildred Williams
Daughter · 1940 · age 22 · b. ~1918 · Illinois
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Sibling
Irene Williams
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Velma Williams
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Williams
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Oleie Williams
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Otis Williams
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Williams
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marilyn Williams
Sibling · 1940 · age 1
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 — Clark-County, Illinois
Open full size
1940 US Federal Census — Clark-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00768-00015)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Beverly | 40 | Head | Farm Laborer | Illinois |
| 2 | Clarence Beverly | 36 | Brother | Farm Laborer | Illinois |
| 3 | Erasmus Whittaker | 65 | Head | House Work | Illinois |
| 4 | Estel D. Whittaker | 20 | Son | Farm Laborer | Illinois |
| 5 | Donald L. Whittaker | 19 | Son | Laborer | Illinois |
| 6 | Frank E. Hedges | 59 | Head | Farm Laborer | Illinois |
| 7 | Elizabeth Hedges | 58 | Wife | House Work | Illinois |
| 8 | Lottie Baird | 48 | Head | House Work | Illinois |
| 9 | Lizzie Baird | 73 | Mother | House Work | Illinois |
| 10 | C. Harley Maxwell | 61 | Head | Farm Laborer | Illinois |
| 11 | Mary Maxwell | 61 | Wife | House Work | Illinois |
| 12 | Martha Maxwell | 77 | Mother | House Work | Illinois |
| 13 | Clarence Clatervin | Clatervine | 23 | Head | Farm Laborer | Illinois |
| 14 | Mildred Clatervin | Clatervine | 21 | Wife | House Work | Illinois |
| 15 | Clifford Irwin | 39 | Head | Farm Laborer | Illinois |
| 16 | Bertha Irwin | 33 | Wife | House Work | Illinois |
| 17 | Fern Irwin | 12 | Daughter | — | Indiana |
| 18 | Dewith Irwin | 10 | Son | — | Illinois |
| 19 | Gayle Irwin | 6 | Son | — | Illinois |
| 20 | Mattie Miller | 66 | Head | House Work | Illinois |
| 21 | W. H. Ellington | 60 | Head | Farm Laborer | Illinois |
| 22 | Mary Ellington | 56 | Wife | House Work | Illinois |
| 23 | Zelma Ellington | 32 | Son | Farm Laborer | Illinois |
| 24 | John Breed | 63 | Head | Farm Laborer | Illinois |
| 25 | Emma Breed | 58 | Wife | House Work | Illinois |
| 26 | John S. Thompson | 60 | Head | Farm Laborer | Illinois |
| 27 | Alice A. Thompson | 56 | Wife | House Work | Illinois |
| 28 | Lantie Underwood | 57 | Head | Farm Laborer | Illinois |
| 29 | Della Underwood | 50 | Wife | House Work | Illinois |
| 30 | David Jesse Underwood | 5 | Grandson | — | Illinois |
| 31 | Otis Williams | 41 | Head | Farm Laborer | Illinois |
| 32 | Clara Williams | 40 | Wife | House Work | Illinois |
| 33 | Mildred Williams THIS PERSON | 22 | Daughter | House Work | Illinois |
| 34 | Irene Williams | 19 | Daughter | House Work | Illinois |
| 35 | Doris Williams | 16 | Daughter | House Work | Illinois |
| 36 | Velma Williams | 14 | Daughter | None | Illinois |
| 37 | Ruth Williams | 10 | Daughter | — | Illinois |
| 38 | Oleie Mae Williams | 7 | Daughter | — | Illinois |
| 39 | Otis Junior Williams | 3 | Son | — | Illinois |
| 40 | Marilyn Williams | 1 | Daughter | — | 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)