DT
Donald Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Donald Thomas across the 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1930 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| June Thomas | Daughter | — | 8 | ~1932 |
| Donald Thomas | Son | — | 10 | ~1930 |
| Henry Thomas | Son | — | 11 | ~1929 |
| Lelia Thomas | Daughter | — | 2 | ~1938 |
| Raymond Thomas | Son | — | 4 | ~1936 |
| Lowell Thomas | Son | — | ~1940 | |
| Ralph Thomas | Son | — | 7 | ~1933 |
| Lelia Thomas | Spouse | — | 31 | ~1909 |
| Stanley Thomas | Head | — | 31 | ~1909 |
Census Appearances
1930
Marion, Indiana
Son, age 1
Marion, Indiana · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Son, age 10
Marion-County, Indiana · implied b. ~1930 — 9 household members
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 10 · b. ~1930 · Indiana
★ You are viewing this record
Sibling
Raymond Thomas
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lowell Thomas
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lelia Thomas
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
June Thomas
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Thomas
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Thomas
Sibling · 1940 · age 7
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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01131-00955)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mattie Harris | 67 | Mother | — | Tennessee |
| 42 | — | None | — | — | — |
| 43 | Raymond Haywood | 45 | Head | — | Kentucky |
| 44 | Aronie Mae Haywood | 32 | Daughter | — | Illinois |
| 45 | — | None | — | — | — |
| 46 | James Bonner | 25 | Head | Laborer | Tennessee |
| 47 | Mattie Bonner | 20 | Wife | — | Tennessee |
| 48 | Emogene Bonner | 4 | Daughter | — | Tennessee |
| 49 | Ema Bonner | 3 | Daughter | — | Tennessee |
| 50 | Gwendolyn Bonner | 1 | Daughter | — | Indiana |
| 51 | Luther Holland | 34 | Head | Trucker | Kentucky |
| 52 | Lula Holland | 34 | Wife | — | Tennessee |
| 53 | Glen Young | 39 | Head | Dish Washer | Tennessee |
| 54 | Bernice Young | 35 | Wife | — | Kentucky |
| 55 | Ivan Wallace | 18 | Head | Laborer | Indiana |
| 56 | James Wallace | 16 | Son | — | Indiana |
| 57 | Robert Young | 12 | Son | — | Indiana |
| 58 | Betty Young | 9 | Daughter | — | Indiana |
| 59 | Stanley Thomas | 31 | Head | Janitor | Indiana |
| 60 | Lelia Thomas | 31 | Wife | — | Tennessee |
| 61 | Henry Thomas | 11 | Son | — | Indiana |
| 62 | Donald Thomas THIS PERSON | 10 | Son | — | Indiana |
| 63 | June Thomas | 8 | Daughter | — | Indiana |
| 64 | Ralph Thomas | 7 | Son | — | Indiana |
| 65 | Raymond Thomas | 4 | Son | — | Indiana |
| 66 | Lelia Thomas | 2 | Daughter | — | Indiana |
| 67 | Lowell Thomas | 0 | Son | — | Indiana |
| 68 | Claude Shaffer | 65 | Head | — | Kentucky |
| 69 | Lula Shaffer | 62 | Wife | — | Kentucky |
| 70 | Henrietta Campbell | 33 | Daughter | Book Mender | Kentucky |
| 71 | Lois Stuart | 13 | Daughter | — | Indiana |
| 72 | Ben Price | 27 | Head | Laborer | Tennessee |
| 73 | Marie Price | 24 | Wife | — | Indiana |
| 74 | Melvin Price | 12 | Son | — | Indiana |
| 75 | Annie E. Price | 5 | Daughter | — | Indiana |
| 76 | Robert Brown | 12 | Nephew | — | Indiana |
| 77 | Claude Pauley | 25 | Head | Brick Layer | Mississippi |
| 78 | Arnetta Pauley | 22 | Wife | — | Tennessee |
| 79 | Asaline Edwards | 42 | Head | Maid | Kentucky |
| 80 | Eugene Edwards | 20 | Son | Youth Worker | Kentucky |
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)