WD
William Day — 1940 US Census Record
Model Tree available1940 United States Federal Census · Vermilion-County, Illinois
Our Model Tree links this William Day across the 1920, 1930 and 1940 US Censuses in Vermilion-County, Illinois (XGBoost, ~Confirmed), with identified parents Timothy & Elizabeth — first a head (b.~1894), then head of a 7-person household.
Age 46
b. ~1894
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Vermilion-County, Illinois |
| Surname | Day |
| Given Name | William D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Danville City |
| 1935 Residence (County) | Vermilion |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Building |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 1300 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Carpenter |
| Township / Ward | Danville City |
| Est. Birth Year | ~1894 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Patricia Day | Daughter | — | 12 | ~1928 |
| Mary Day | Daughter | — | 15 | ~1925 |
| Norma Day | Daughter | — | 12 | ~1928 |
| William Day | Head | — | 46 | ~1894 |
| Thomas Day | Son | — | 15 | ~1925 |
| William Day | Son | — | 18 | ~1922 |
| Ruth Day | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Vermilion, Illinois
Son, age 25
Vermilion, Illinois · implied b. ~1895 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Porter |
| Industry | Sugar Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Vermilion, Illinois
Head, age 37
Vermilion, Illinois · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Carpenter |
| Industry | Buildings |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | WW |
| Home Value / Rent | O |
| Veteran | yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Vermilion-County, Illinois
Head, age 46
Vermilion-County, Illinois · implied b. ~1894 — 7 household members
| Surname | Day |
| Given Name | William D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Danville City |
| 1935 Residence (County) | Vermilion |
| Occupation | Carpenter |
| Industry | Building |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 1300 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| 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 William Day across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Timothy Day (~0.92 confidence) and mother Elizabeth Day (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Timothy Day
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Day
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Day
Head · 1940 · age 46 · b. ~1894 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Vermilion-County, Illinois
Open full size
1940 US Federal Census — Vermilion-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00898-00312)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dorothy Dubree | 14 | Daughter | — | Illinois |
| 2 | Oliver Dubree | 12 | Son | — | Illinois |
| 3 | Virgil Dubree | 10 | Son | — | Illinois |
| 4 | Joe P. Mcclain | 40 | Head | Laborer | Indiana |
| 5 | Eunice Mcclain | 44 | Wife | — | Illinois |
| 6 | Harold Mcclain | 15 | Son | — | Illinois |
| 7 | Harry Mcclain | 12 | Son | — | Illinois |
| 8 | Billy Mcclain | 10 | Son | — | Illinois |
| 9 | Chas. E. Mcclain | 7 | Son | — | Illinois |
| 10 | Daniel L. Mcclain | 5 | Son | — | Illinois |
| 11 | Frank M. Bailey | 70 | Head | — | England |
| 12 | Mary J. Bailey | 68 | Wife | — | Wales |
| 13 | Clarence W. Schafer | 32 | Head | — | Illinois |
| 14 | Edna Schafer | 34 | Wife | Operator | Illinois |
| 15 | Chas. J. Haas | 72 | Head | Labor | Illinois |
| 16 | Marian L. Haas | 72 | Wife | — | Illinois |
| 17 | William Bennett | 72 | Head | Miner | England |
| 18 | Mary E. Bennett | 65 | Wife | — | Illinois |
| 19 | Zelda Bennett | 27 | Daughter | Trained Nurse | Illinois |
| 20 | William D. Day THIS PERSON | 46 | Head | Carpenter | Illinois |
| 21 | Ruth M. Day | 45 | Wife | — | Illinois |
| 22 | William Geo. Day | 18 | Son | — | Illinois |
| 23 | Thomas D. Day | 15 | Son | — | Illinois |
| 24 | Mary Ellen Day | 15 | Daughter | — | Illinois |
| 25 | Norma Jean Day | 12 | Daughter | — | Illinois |
| 26 | Patricia Ann Day | 12 | Daughter | — | Illinois |
| 27 | Frank B. Smith | 46 | Head | Route-Man | New Jersey |
| 28 | Fay Smith | 31 | Wife | — | Illinois |
| 29 | John Smith | 13 | Son | — | Illinois |
| 30 | Paul L. Jones | 31 | Head | Truck-Driver | Illinois |
| 31 | Juanita Jones | 27 | Wife | — | Illinois |
| 32 | William E. Jones | 5 | Son | — | Illinois |
| 33 | Otis P. Jones | 2 | Son | — | Illinois |
| 34 | Alvie R. Grubbs | 24 | Head | Laborer | Illinois |
| 35 | Clell Grubbs | 23 | Wife | — | Illinois |
| 36 | James R. Grubbs | 0 | Son | — | Illinois |
| 38 | Edmond P. Jones | 68 | Head | — | Illinois |
| 39 | Nancy Bell Jones | 66 | Wife | — | West Virginia |
| 40 | Otis R. Jones | 59 | Brother | Bridge-Building | Illinois |
Pedigree Summary
William
Gen 1 · 2 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)