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Thelma Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Thelma Thompson across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Lloyd & Lloyd — first a daughter (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Thompson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Teacher |
| Industry | School |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3491 |
| Highest Grade | C-2 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Teacher |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1917 |
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 Thelma | Age | Birth yr |
|---|---|---|---|---|
| Lloyd Thompson | Head | — | 46 | ~1894 |
| Fannie Thompson | Spouse | — | 46 | ~1894 |
| Dorothea Thompson | Daughter | — | 21 | ~1919 |
| Thelma Thompson | Daughter | — | 23 | ~1917 |
Census Appearances
1920
Marion, Indiana
Daughter, age 3
Marion, Indiana · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 13
Marion, Indiana · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Thelma P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 23
Marion-County, Indiana · implied b. ~1917 — 4 household members
| Surname | Thompson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | Teacher |
| Industry | School |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3491 |
| Highest Grade | C-2 |
| 1935 Residence | Same House |
| 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 Thelma Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lloyd Thompson (~0.92 confidence) and father Lloyd Thompson (~0.92 confidence) and mother Emma Thompson (~0.92 confidence) and mother Fannie Thompson (~0.92 confidence) and father Lloyd Thompson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lloyd Thompson
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Lloyd Thompson
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Emma Thompson
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Fannie Thompson
b. ~1894
Source mother
● Household
· direct · ~0.92
Father
Lloyd Thompson
b. ~1894
Source father
● Household
· direct · ~0.92
This person
Anchor record
Thelma Thompson
Daughter · 1940 · age 23 · b. ~1917 · Indiana
★ You are viewing this record
Sibling
Dorothea Thompson
Sibling · 1940 · age 21
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-t0627-01125-00701)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Estella Taylor | 66 | Wife | — | Ohio |
| 42 | Theodore Voltus | 25 | Head | Assistant Manager | Illinois |
| 43 | Marie Voltus | 29 | Wife | — | New York |
| 44 | Robert Voltus | 3 | Son | — | Indiana |
| 45 | Michael Voltus | 0 | Son | — | Indiana |
| 46 | Joseph Mckinster | 29 | Head | Electrical Engineer | Indiana |
| 47 | Louise Mckinster | 27 | Wife | — | Indiana |
| 48 | Ora Robinson | 58 | Mother-in-law | — | Indiana |
| 49 | John Mcdermon | 38 | Head | Clerk | Indiana |
| 50 | Margaret Mcdermon | 32 | Wife | — | Indiana |
| 51 | Ernest Kruig | 31 | Head | Pharmacist | Indiana |
| 52 | Mary Kruig | 32 | Wife | — | Indiana |
| 53 | Ronald Kruig | 2 | Son | — | Indiana |
| 54 | Lloyd M. Thompson | 46 | Head | Carpenter | Indiana |
| 55 | Fannie Thompson | 46 | Wife | — | Illinois |
| 56 | Thelma Thompson THIS PERSON | 23 | Daughter | Teacher | Indiana |
| 57 | Dorothea Thompson | 21 | Daughter | Teller | Indiana |
| 58 | Harry Van Rummen | 50 | Head | Billing Clerk | Ohio |
| 59 | Claire Van Rummen | 28 | Daughter | Billing Machine Operator | Indiana |
| 60 | Mary H. Powell | 32 | Lodger | Billing Machine Operator | N. Carolina |
| 61 | Edith Mitchener | 30 | Lodger | Stenographer | Indiana |
| 62 | Robert E. Gray | 50 | Head | Fireman | Indiana |
| 63 | Mary K. Gray | 52 | Wife | — | Illinois |
| 64 | Jack S. Nugent | 12 | Step-son | — | Indiana |
| 65 | Judith Kay Gray | 3 | Daughter | — | Indiana |
| 66 | M. E. Smith | 38 | Head | Grocer | Indiana |
| 67 | Katherine Smith | 35 | Wife | Waitress | Indiana |
| 68 | Nellie Abbott | 64 | Mother-in-law | — | Indiana |
| 69 | George De Vany | 38 | Head | Heater Fireman | Kentucky |
| 70 | Martha De Vany | 34 | Wife | — | Indiana |
| 71 | Wm. Finch | 25 | Brother-in-law | Manager | Illinois |
| 72 | Clarence Mindenhall | 44 | Head | Register Clerk | Indiana |
| 73 | Alma Mindenhall | 41 | Wife | — | Indiana |
| 74 | Thelma Mindenhall | 21 | Daughter | Stenographer | Indiana |
| 75 | James Mindenhall | 21 | Son | — | Indiana |
| 76 | Harry Smith | 47 | Head | Clerk | Indiana |
| 77 | Lulu Smith | 48 | Wife | — | Indiana |
| 78 | June Smith | 14 | Daughter | — | Indiana |
| 79 | Donald Smith | 12 | Son | — | Indiana |
| 80 | Virginia Smith | 10 | Daughter | — | Indiana |
Pedigree Summary
Thelma + 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)