RT
Roy Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Vermilion-County, Illinois
Our Model Tree links this Roy Thomas across the 1920, 1930 and 1940 US Censuses in Vermilion-County, Illinois (XGBoost, ~Confirmed), with identified parents James & Samuel — first a son (b.~1895), then head of a 4-person household.
Age 45
b. ~1895
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Vermilion-County, Illinois |
| Surname | Thomas |
| Given Name | Roy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Danville Twp |
| 1935 Residence (County) | Vermilion |
| Additional Details | |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Danville Twp |
| Est. Birth Year | ~1895 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Roy | Age | Birth yr |
|---|---|---|---|---|
| Samuel Thomas | Head | — | 71 | ~1869 |
| Florence Thomas | Spouse | — | 65 | ~1875 |
| Roy Thomas | Son | — | 45 | ~1895 |
| Paul Thomas | Son | — | 36 | ~1904 |
Census Appearances
1920
Vermilion, Illinois
Son, age 24
Vermilion, Illinois · implied b. ~1896 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ray |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Coal Miner |
| Industry | Coal Mine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Son, age 34
Vermilion, Illinois · implied b. ~1896 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ray |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Laborer |
| Industry | Saw Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Vermilion-County, Illinois
Son, age 45
Vermilion-County, Illinois · implied b. ~1895 — 4 household members
| Surname | Thomas |
| Given Name | Roy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Danville Twp |
| 1935 Residence (County) | Vermilion |
| Highest Grade | No 0 |
| 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 Roy Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Thomas (~0.92 confidence) and father Samuel Thomas (~0.92 confidence) and father Samuel Thomas (~0.92 confidence) and mother Florence Thomas (~0.92 confidence) and mother Florence Thomas (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Thomas
b. ~1869
Source father
● Household
· direct · ~0.92
Father
Samuel Thomas
b. ~1869
Source father
● Household
· direct · ~0.92
Father
Samuel Thomas
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Florence Thomas
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Florence Thomas
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Roy Thomas
Son · 1940 · age 45 · b. ~1895 · Illinois
★ You are viewing this record
Sibling
Paul Thomas
Sibling · 1940 · age 36
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 — Vermilion-County, Illinois
Open full size
1940 US Federal Census — Vermilion-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00898-00549)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Gaydos | 31 | Head | Coal Miner | Illinois |
| 2 | Irene Gaydos | 28 | Wife | — | Illinois |
| 3 | Patricia Gaydos | 5 | Daughter | — | Illinois |
| 4 | John Bartlett | 73 | Head | — | Illinois |
| 5 | Malissa Bartlett | 79 | Wife | — | Indiana |
| 6 | Florent Vallett | 69 | Head | Miner | France |
| 7 | Rosanna Vallett | 70 | Wife | — | France |
| 8 | Martha Vallett | 31 | Daughter | — | Illinois |
| 9 | David Vallett | 28 | Son | Miner | Illinois |
| 10 | Samuel Thomas | 71 | Head | — | Illinois |
| 11 | Florence Thomas | 65 | Wife | — | Illinois |
| 12 | Roy Thomas THIS PERSON | 45 | Son | — | Illinois |
| 13 | Paul Thomas | 36 | Son | — | Illinois |
| 14 | Daniel Ramsey | 62 | Head | Laborer | Indiana |
| 15 | Sarah Ramsey | 27 | Wife | — | Indiana |
| 16 | Helen Ward | 37 | Head | — | Belgium |
| 17 | Arnold Ward | 2 | Son | — | Illinois |
| 18 | Jerry Ward | 1 | Son | — | Illinois |
| 19 | Eugene Reese | 36 | Head | — | Illinois |
| 20 | Richard Reese | 12 | Son | — | Illinois |
| 21 | Dorothy Reese | 4 | Daughter | — | Illinois |
| 22 | Ross Van Burk | 62 | Head | — | Illinois |
| 23 | Allie Van Burk | 59 | Wife | — | Illinois |
| 24 | Martha Van Burk | 19 | Daughter | — | Illinois |
| 25 | Kenneth Cook | 36 | Head | — | Illinois |
| 26 | Ada Cook | 30 | Wife | — | Illinois |
| 27 | Norma Jean Cook | 9 | Daughter | — | Illinois |
| 28 | Howard Abbott | 22 | Head | — | Illinois |
| 29 | Eva Abbott | 17 | Wife | — | Illinois |
| 30 | Herbert Ruhn | 63 | Head | — | Illinois |
| 31 | Fannie Pease | 64 | Wife | — | Indiana |
| 32 | Thomas Pease | 83 | Head | — | Pennsylvania |
| 33 | Charles Lane | 28 | Head | Miner | Oakwood |
| 34 | Naomi Lane | 26 | Wife | — | Illinois |
| 35 | Barbara Lane | 8 | Daughter | — | Illinois |
| 36 | Farrell Lane | 6 | Son | — | Illinois |
| 37 | Helen Lane | 5 | Daughter | — | Illinois |
| 38 | Ronald Lane | 2 | Son | — | Illinois |
| 39 | Andrew Estock | 45 | Head | Miner | Illinois |
| 40 | Pearl Estock | 39 | Wife | — | Illinois |
Related Census Records
Pedigree Summary
Roy + 1 sibling
Gen 1 · 5 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)