GT
Grace Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Grace Thomas across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 3-person household.
Age 42
b. ~1898
Female
Spouse
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Thomas |
| Given Name | Grace |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | G-7 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1898 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Grace | Age | Birth yr |
|---|---|---|---|---|
| Frank Thomas | Head | — | 40 | ~1900 |
| Mary Thomas | Daughter | — | 13 | ~1927 |
| Grace Thomas | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Marion, Indiana
Spouse, age 22
Marion, Indiana · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Grace |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Auto |
| Industry | Sales |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Spouse, age 32
Marion, Indiana · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Grace |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 23 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Spouse, age 42
Marion-County, Indiana · implied b. ~1898 — 3 household members
| Surname | Thomas |
| Given Name | Grace |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Highest Grade | G-7 |
| 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 Grace Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Grace Thomas
Spouse · 1940 · age 42 · b. ~1898 · Indiana
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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-t0627-01125-00735)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred Miller | 28 | Son-in-law | Supervisor | Ohio |
| 2 | Irma M. Miller | 27 | Daughter | Stenographer | Indiana |
| 3 | Irwin C. Woempner | 23 | Head | Bookkeeper | Indiana |
| 4 | Irene E. Woempner | 24 | Wife | Typist | Scotland |
| 5 | Robert V. Dallas | 18 | Brother-in-law | Shipping Clerk | Indiana |
| 6 | Aubra C. Wooten | 40 | Head | Salesman | Indiana |
| 7 | Murlie I. Wooten | 39 | Wife | — | Indiana |
| 8 | Leo E. Thomas | 44 | Head | Accountant | Indiana |
| 9 | Helen F. Thomas | 44 | Wife | — | Indiana |
| 10 | Margaret L. Thomas | 9 | Daughter | — | Indiana |
| 11 | John P. Tedrowe | 62 | Head | Shipping Clerk | Indiana |
| 12 | Cora E. Tedrowe | 54 | Wife | — | Indiana |
| 13 | John W. Bader | 50 | Head | Retail Coffee Man | Indiana |
| 14 | Clara M. Bader | 51 | Wife | — | Indiana |
| 15 | Marguerite F. Bader | 27 | Daughter | Secretary | Indiana |
| 16 | Henry E. Costin | 35 | Head | Electrical Engineer | Virginia |
| 17 | Hermine Costin | 33 | Wife | — | Indiana |
| 18 | Margaret C. Van Borssum | 64 | Mother-in-law | — | Indiana |
| 19 | Donald H. Cusick | 42 | Head | Funeral Director | Indiana |
| 20 | Mary E. Cusick | 33 | Wife | — | Illinois |
| 21 | Nancy Cusick | 3 | Daughter | — | Indiana |
| 22 | Dell E. Benbow | 32 | Head | Salesman | Indiana |
| 23 | Marguerite V. Benbow | 32 | Wife | — | Indiana |
| 24 | David Blum | 29 | Head | Salesman | Ohio |
| 25 | Mable Blum | 31 | Wife | Saleslady | Indiana |
| 26 | Frank R. Thomas | 40 | Head | Building Contractor | Indiana |
| 27 | Grace Thomas THIS PERSON | 42 | Wife | — | Indiana |
| 28 | Mary L. Thomas | 13 | Daughter | — | Indiana |
| 29 | Frank L. Bryan | 43 | Head | Salesman | Indiana |
| 30 | Marie G. Bryan | 42 | Wife | — | Indiana |
| 31 | Frank L. Jr. Bryan | 9 | Son | — | Indiana |
| 32 | Kathrine Bryan | 76 | Mother | — | Canada-English |
| 33 | Edwin B. Hasseld | 33 | Head | Salesman | Indiana |
| 34 | Irma L. Hasseld | 24 | Wife | — | Indiana |
| 35 | Rosalynn M. Hasseld | 2 | Daughter | — | Indiana |
| 36 | Louis F. Jr. Heid | 25 | Head | Pharmacist | Indiana |
| 37 | Nina B. Heid | 24 | Wife | — | Indiana |
| 38 | Louis F. Iii Heid | 2 | Son | — | Indiana |
| 39 | Horace D. Hunter | 33 | Head | Bus Driver | Kentucky |
| 40 | Gertrude Hunter | 27 | Wife | — | Kansas |
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)