DT
Donald Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Shelby-County, Illinois
Our Model Tree links this Donald Thomas across the 1930 and 1940 US Censuses in Shelby-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Shelby-County, Illinois |
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Shelby |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Prairie Township |
| Est. Birth Year | ~1927 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Agnes Thomas | Daughter | — | 21 | ~1919 |
| Alice Thomas | Daughter | — | 11 | ~1929 |
| Irvin Thomas | Son | — | 19 | ~1921 |
| Gaylord Thomas | Son | — | 17 | ~1923 |
| Donald Thomas | Son | — | 13 | ~1927 |
| Harry Thomas | Head | — | 43 | ~1897 |
| Bertha Thomas | Daughter | — | 9 | ~1931 |
| Oscar Thomas | Son | — | 2 | ~1938 |
| Omer Thomas | Son | — | 7 | ~1933 |
| Bessie Thomas | Spouse | — | 41 | ~1899 |
| William Thomas | Son | — | 15 | ~1925 |
Census Appearances
1930
Shelby, Illinois
Son, age 3
Shelby, Illinois · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Shelby-County, Illinois
Son, age 13
Shelby-County, Illinois · implied b. ~1927 — 11 household members
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Shelby |
| Highest Grade | No 7 |
| 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 Donald Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Donald Thomas
Son · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Oscar Thomas
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Thomas
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Thomas
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Omer Thomas
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Thomas
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Thomas
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gaylord Thomas
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irvin Thomas
Sibling · 1940 · age 19
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 — Shelby-County, Illinois
Open full size
1940 US Federal Census — Shelby-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00890-00391)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rita Kearney | 15 | daughter | — | Illinois |
| 2 | Howard A. Kearney | 33 | head | Laborer | Illinois |
| 3 | Mildred Kearney | 30 | wife | — | Illinois |
| 4 | Otto Roellig | 75 | head | Farmer | Germany |
| 5 | Paulena Roellig | 65 | wife | — | Illinois |
| 6 | Martin Roellig | 38 | son | Farmer | Illinois |
| 7 | Opal Shanhottzer | 19 | head | — | Illinois |
| 8 | Max Shanhottzer | 17 | brother | Farmer | Illinois |
| 9 | Nelson, D. Jones | 84 | head | — | Ohio |
| 10 | Martha Jones | 82 | wife | — | Ohio |
| 11 | Elwood Jones | 56 | son | Farmer | Ohio |
| 12 | Cleo M. Jones | 21 | grand daughter | — | S. Dakota |
| 13 | Harry Thomas | 43 | head | Carpenter | Illinois |
| 14 | Bessie Thomas | 41 | wife | — | Illinois |
| 15 | Agnes Thomas | 21 | daughter | — | Illinois |
| 16 | Irvin Thomas | 19 | son | — | Illinois |
| 17 | Gaylord Thomas | 17 | son | — | Illinois |
| 18 | William Thomas | 15 | son | — | Illinois |
| 19 | Donald Thomas THIS PERSON | 13 | son | — | Illinois |
| 20 | Alice Thomas | 11 | daughter | — | Illinois |
| 21 | Bertha Thomas | 9 | daughter | — | Illinois |
| 22 | Omer Thomas | 7 | son | — | Illinois |
| 23 | Oscar Thomas | 2 | son | — | Illinois |
| 24 | Ben Vollerman | 45 | head | Farmer | Illinois |
| 25 | Ruth Vollerman | 45 | wife | — | Illinois |
| 26 | Paul Louis Vollerman | 22 | son | Operator | Illinois |
| 27 | Dorothy Dean Vollerman | 19 | son | Laborer | Illinois |
| 28 | Morris Ruth Vollerman | 14 | daughter | — | Illinois |
| 29 | Dean Morris Vollerman | 12 | son | — | Illinois |
| 30 | Roy Largent | 42 | head | Salesman | Illinois |
| 31 | Marie Largent | 33 | wife | Salesman | Illinois |
| 32 | Wilbur Largent | 13 | son | — | Illinois |
| 33 | Norma Jeanne Largent | 11 | daughter | — | Illinois |
| 34 | Thos. Ulmer | 64 | head | Farmer | Illinois |
| 35 | Hanna Ulmer | 66 | wife | — | Illinois |
| 36 | Florence Ulmer | 34 | daughter | — | Illinois |
| 37 | Eddie Stremming | 28 | head | Farmer | Illinois |
| 38 | Hilda Stremming | 22 | wife | — | Illinois |
| 39 | Joseph Owens | 56 | head | Laborer | Illinois |
| 40 | Alta Owens | 46 | 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)