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Melvin Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, Illinois
Our Model Tree links this Melvin Williams across the 1930 and 1940 US Censuses in Mercer-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 12-person household.
Age 15
b. ~1925
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Illinois |
| Surname | Williams |
| Given Name | Melvin |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Perryton |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Perryton |
| Est. Birth Year | ~1925 |
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 Melvin | Age | Birth yr |
|---|---|---|---|---|
| Willard Williams | Son | — | 17 | ~1923 |
| Pauline Williams | Daughter | — | 19 | ~1921 |
| Letha Williams | Daughter | — | 23 | ~1917 |
| Everett Williams | Son | — | 13 | ~1927 |
| Lyle Lemons | Other | — | 17 | ~1923 |
| Melvin Williams | Son | — | 15 | ~1925 |
| Ruth Williams | Spouse | — | 45 | ~1895 |
| Fred Williams | Head | — | 50 | ~1890 |
| Patricia Williams | Daughter | — | 3 | ~1937 |
| Leonard Williams | Son | — | 5 | ~1935 |
| Dorothy Williams | Daughter | — | 7 | ~1933 |
| Shirley Williams | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Mercer, Illinois
Son, age 5
Mercer, Illinois · implied b. ~1925 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mercer-County, Illinois
Son, age 15
Mercer-County, Illinois · implied b. ~1925 — 12 household members
| Surname | Williams |
| Given Name | Melvin |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Perryton |
| 1935 Residence (County) | Mercer |
| Class of Worker | 0 |
| 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 Melvin Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Melvin Williams
Son · 1940 · age 15 · b. ~1925 · Illinois
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Sibling
Leonard Williams
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Letha Williams
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willard Williams
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Williams
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Williams
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Williams
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Williams
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Everett Williams
Sibling · 1940 · age 13
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 — Mercer-County, Illinois
Open full size
1940 US Federal Census — Mercer-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00858-00421)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Julia Boyles | 67 | sister | — | Illinois |
| 42 | Mary Boyles | 78 | cousin | — | Illinois |
| 43 | John D. Davis | 36 | head | Farmer | Kentucky |
| 44 | Esther Davis | 33 | wife | — | Kentucky |
| 45 | Juanita Davis | 16 | daughter | — | Kentucky |
| 46 | Rollon Davis | 13 | son | — | Kentucky |
| 47 | Charles Davis | 11 | son | — | Illinois |
| 48 | Dorothy Davis | 9 | daughter | — | Illinois |
| 49 | Beverly Davis | 4 | daughter | — | Illinois |
| 50 | Milton Short | 27 | hired hand | Laborer | Kentucky |
| 51 | Fred O. Williams | 50 | head | Farmer | Illinois |
| 52 | Ruth Williams | 45 | wife | — | Illinois |
| 53 | Letha Williams | 23 | daughter | Waitress | Illinois |
| 54 | Pauline Williams | 19 | daughter | — | Illinois |
| 55 | Willard Williams | 17 | son | Laborer | Illinois |
| 56 | Melvin Williams THIS PERSON | 15 | son | — | Illinois |
| 57 | Everett Williams | 13 | son | — | Illinois |
| 58 | Shirley Williams | 9 | daughter | — | Illinois |
| 59 | Dorothy Williams | 7 | daughter | — | Illinois |
| 60 | Leonard Williams | 5 | son | — | Illinois |
| 61 | Patricia Williams | 3 | daughter | — | Illinois |
| 62 | Lyle Lemons | 17 | hired hand | Laborer | Illinois |
| 63 | Ralph O. Hill | 20 | head | Laborer | Illinois |
| 64 | Ruth Hill | 16 | wife | — | Illinois |
| 65 | Robert Pollock | 63 | head | Laborer | Illinois |
| 66 | Hannah O. Pollock | 61 | wife | — | Illinois |
| 67 | Maynard Thompson | 42 | head | Laborer | Wisconsin |
| 68 | Freda Thompson | 46 | wife | — | Iowa |
| 69 | Alberta Thompson | 14 | daughter | — | Illinois |
| 70 | Maynard Thompson | 12 | son | — | Illinois |
| 71 | Catherine Thompson | 10 | daughter | — | Illinois |
| 72 | Clyde Thompson | 7 | son | — | Illinois |
| 73 | Darrell Thompson | 6 | son | — | Illinois |
| 74 | Darlene Thompson | 3 | daughter | — | Illinois |
| 75 | Everett Gustafson | 32 | head | Farmer | Illinois |
| 76 | Mary Gustafson | 30 | wife | — | Illinois |
| 77 | Hulda Gustafson | 65 | mother | — | Illinois |
| 78 | Gust Anderson | 76 | uncle | Laborer | Sweden |
| 79 | Ernest Cooper | 38 | head | Laborer | Illinois |
| 80 | Myra Cooper | 20 | wife | — | Illinois |
Related Census Records
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)