ET
Elizabeth Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Montgomery-County, Ohio
Our Model Tree links this Elizabeth Thomas across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Ohio (XGBoost, ~Confirmed), with identified parents Pearl & Clara — first a daughter (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Ohio |
| Surname | Thomas |
| Given Name | Elizabeth E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton City |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Highest Grade | C 5 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Dayton City |
| Est. Birth Year | ~1915 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Elizabeth | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Thomas | Daughter | — | 25 | ~1915 |
| Pearl Culbertson | Head | — | 63 | ~1877 |
| Clara Shultz | Other | — | 63 | ~1877 |
| Don Thomas | Son | — | 29 | ~1911 |
| Clara Culbertson | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Montgomery, Ohio
Daughter, age 4
Montgomery, Ohio · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Montgomery, Ohio
Daughter, age 15
Montgomery, Ohio · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Montgomery-County, Ohio
Daughter, age 25
Montgomery-County, Ohio · implied b. ~1915 — 5 household members
| Surname | Thomas |
| Given Name | Elizabeth E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton City |
| 1935 Residence (County) | Montgomery |
| Highest Grade | C 5 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Elizabeth Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Pearl Culbertson (~0.92 confidence) and mother Clara Culbertson (~0.92 confidence) and father William Thomas (~0.92 confidence) and mother Victoria Thomas (~0.92 confidence) and mother Rosetta Thomas (~0.92 confidence) and father Clarence Thomas (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Pearl Culbertson
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Clara Culbertson
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
William Thomas
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Victoria Thomas
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Rosetta Thomas
b. ~1889
Source mother
● Household
· direct · ~0.92
Father
Clarence Thomas
b. ~1890
Source father
● Household
· direct · ~0.92
This person
Anchor record
Elizabeth Thomas
Daughter · 1940 · age 25 · b. ~1915 · Ohio
★ You are viewing this record
Sibling
Don Thomas
Sibling · 1940 · age 29
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 — Montgomery-County, Ohio
Open full size
1940 US Federal Census — Montgomery-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03253-00231)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Conrad D Mendenhall | 60 | Head | Housekeeper | Ohio |
| 2 | Leola Steinmetz | 45 | Lodger | Stenographer | Ohio |
| 3 | Sarah Anderson | 36 | Lodger | Bookkeeper | Ohio |
| 4 | Harvey Mcminn | 24 | Lodger | Apprentice Lineman | Pennsylvania |
| 5 | Henrietta Mcminn | 23 | Lodger | — | Pennsylvania |
| 6 | Robert Roy | 23 | Lodger | Mechanical Engineer | Oregon |
| 7 | Stephen Vest | 24 | Lodger | Advertiser | Ohio |
| 8 | John Downs | 26 | Lodger | Accounting Clerk | Ohio |
| 9 | Stanley D Howell | 41 | Head | General Supt. | Wales |
| 10 | Mary Howell | 48 | Wife | — | Wales |
| 11 | Gwendolyn M Howell | 27 | Daughter | Stenographer | Ohio |
| 12 | Margaret D Howell | 17 | Daughter | — | Ohio |
| 13 | Marjorie A Burroughs | 48 | Head | — | Ohio |
| 14 | Mildred Burroughs | 44 | Sister | Stenographer | Ohio |
| 15 | John D Haas | 67 | Head | Treasurer | Ohio |
| 16 | Helen M Haas | 35 | Wife | — | Ohio |
| 17 | Catherine L Haas | 3 | Daughter | — | Ohio |
| 18 | Robert R Holman | 30 | Head | Attendant | Ohio |
| 19 | Ruth Holman | 29 | Wife | — | Ohio |
| 20 | Alice Koepnick | 33 | Head | Saleslady | Ohio |
| 21 | Georgiana D Thompson | 65 | Mother | — | Ohio |
| 22 | Edward S Koepnick | 14 | Son | — | Ohio |
| 23 | Berthold A Mobley | 66 | Head | — | Ohio |
| 24 | Agnes R Mobley | 64 | Wife | — | Ohio |
| 25 | Andrew Lucas | 56 | Head | Press Finisher | Ohio |
| 26 | Winifred A Lucas | 64 | Wife | — | Ohio |
| 27 | Catherine Rowe | 84 | Aunt | — | Ohio |
| 28 | Pearl D Culbertson | 63 | Head | Musician | Ohio |
| 29 | Clara Culbertson | 61 | Wife | — | Ohio |
| 30 | Don Thomas | 29 | Son | Architect | Ohio |
| 31 | Elizabeth E Thomas THIS PERSON | 25 | Daughter | — | Ohio |
| 32 | Clara E Shultz | 63 | Lodger | Housekeeper | Ohio |
| 33 | Stephen Maloney | 40 | Head | Salesman | Ohio |
| 34 | Dorothy Maloney | 42 | Wife | — | Illinois |
| 35 | Stephen Maloney | 12 | Son | — | Michigan |
| 36 | James Maloney | 10 | Son | — | Michigan |
| 37 | Lloyd C Brady | 28 | Head | Editor | Missouri |
| 38 | Marie Brady | 26 | Wife | — | Illinois |
| 39 | Paul Brady | 3 | Son | — | New York |
| 40 | Samuel Fisher | 54 | Head | Proprietor | Russia |
Pedigree Summary
Elizabeth + 1 sibling
Gen 1 · 6 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)