HT
Helen Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Helen Thompson across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents John & James — first a daughter (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Thompson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Some House |
| 1935 Residence (County) | Some House |
| Additional Details | |
| Occupation | Librarian |
| Industry | Public Library |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 1200 |
| Highest Grade | C 5 |
| 1935 Residence | Some House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Librarian |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1911 |
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 Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Thompson | Daughter | — | 29 | ~1911 |
| John Thompson | Head | — | 59 | ~1881 |
| Pearl Thompson | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Marion, Indiana
Daughter, age 9
Marion, Indiana · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 19
Marion, Indiana · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Helen P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Worker |
| Industry | Library |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 29
Marion-County, Indiana · implied b. ~1911 — 3 household members
| Surname | Thompson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Some House |
| 1935 Residence (County) | Some House |
| Occupation | Librarian |
| Industry | Public Library |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 1200 |
| Highest Grade | C 5 |
| 1935 Residence | Some 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 Helen Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Thompson (~0.92 confidence) and father James Thompson (~0.92 confidence) and mother Pearl Thompson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Thompson
b. ~1881
Source father
● Household
· direct · ~0.92
Father
James Thompson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Pearl Thompson
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Thompson
Daughter · 1940 · age 29 · b. ~1911 · Indiana
★ You are viewing this record
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-t0627-01129-01008)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Matilda Thompson | 45 | Daughter in law | Cook | Indiana |
| 2 | John Thompson | 59 | Head | Carpenter | Indiana |
| 3 | Pearl Thompson | 54 | Wife | — | Indiana |
| 4 | Helen Thompson THIS PERSON | 29 | Daughter | Librarian | Indiana |
| 5 | Edward Rothkopf | 43 | Head | Proprietor | Indiana |
| 6 | Alma Rothkopf | 40 | Wife | — | Indiana |
| 7 | Charlotte Rothkopf | 19 | Daughter | Office Clerk | Indiana |
| 8 | Donald Rothkopf | 14 | Son | Carrier | Indiana |
| 9 | Walter Miller | 42 | Head | Statistician | Indiana |
| 10 | Irene Miller | 40 | Wife | — | Indiana |
| 11 | Carol Miller | 9 | Daughter | — | Indiana |
| 12 | Jack Miller | 6 | Son | — | Indiana |
| 13 | Edith Miller | 40 | Daughter | Phone Clerk | Indiana |
| 14 | Emmett Ferris | 60 | Head | Meat Cutter | Kentucky |
| 15 | Myrtle Ferris | 53 | Wife | — | Indiana |
| 16 | Ralph Bishop | 42 | Son in law | Proprietor | Indiana |
| 17 | Mary Bishop | 39 | Daughter | — | Indiana |
| 18 | Betty Bishop | 16 | Daughter | — | Indiana |
| 19 | Robert Bishop | 11 | Son | — | Indiana |
| 20 | Margaret Bishop | 8 | Daughter | — | Indiana |
| 21 | Charles Bishop | 2 | Son | — | Indiana |
| 22 | Herbert Thiele | 42 | Head | Draftsman | Indiana |
| 23 | Margaret Thiele | 39 | Wife | — | Indiana |
| 24 | Henry Bergfeld | 23 | Lodger | Bag Maker | Missouri |
| 25 | Braun Strother | 22 | Lodger | Clerk | Kentucky |
| 26 | Anna Franz | 52 | Sister in law | Housekeeper | Indiana |
| 27 | Almeda Ernest | 74 | Head | — | Indiana |
| 28 | Paul Ernest | 43 | Son | Clerk | Indiana |
| 29 | Dorotha Ernest | 25 | Daughter in law | Packer | Indiana |
| 30 | James De Pew | 44 | Lodger | Installer | Illinois |
| 31 | John Scott | 39 | Head | Proprietor | Tennessee |
| 32 | Willamae Scott | 36 | Wife | — | Tennessee |
| 33 | Elizabeth Anna Scott | 18 | Daughter | New Worker | Indiana |
| 34 | Richard Scott | 15 | Son | — | Indiana |
| 35 | William Scott | 13 | Son | — | Indiana |
| 36 | Elizabeth White | 65 | Sister in law | — | Indiana |
| 37 | Clemens Ertel | 58 | Head | Office Clerk | Tennessee |
| 38 | Elizabeth Ertel | 52 | Wife | — | Indiana |
| 39 | Lawrence Ertel | 21 | Son | Drug Clerk | Indiana |
| 40 | Herman Jasper | 49 | Head | Typer Setter | Indiana |
Related Census Records
Pedigree Summary
Helen
Gen 1 · 3 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)