RT
Ruth Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Montgomery-County, Ohio
Our Model Tree links this Ruth Thomas across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Ohio (XGBoost, ~Confirmed), with identified parents Henry & Lila — first a daughter (b.~1915), then head of a 4-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 | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Occupation | Inspector |
| Industry | Mfg. Rubber Products |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 950 |
| Highest Grade | H-3 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Inspector |
| Township / Ward | Dayton |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Ruth Thomas | Daughter | — | 25 | ~1915 |
| Henry Thomas | Head | — | 50 | ~1890 |
| Roy Thomas | Son | — | 28 | ~1912 |
| Lila Thomas | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Montgomery, Ohio
Daughter, age 4
Montgomery, Ohio · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ruth E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Ohio |
| Speaks English | none |
| 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 | Ruth |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Kentucky |
| 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 — 4 household members
| Surname | Thomas |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton |
| 1935 Residence (County) | Montgomery |
| Occupation | Inspector |
| Industry | Mfg. Rubber Products |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 950 |
| Highest Grade | H-3 |
| 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 Ruth Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Thomas (~0.92 confidence) and mother Lila Thomas (~0.92 confidence) and mother Lela Thomas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Thomas
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Lila Thomas
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Lela Thomas
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Thomas
Daughter · 1940 · age 25 · b. ~1915 · Ohio
★ You are viewing this record
Sibling
Roy Thomas
Sibling · 1940 · age 28
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-t0627-03255-00940)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lizzie J. Lupman | 76 | Head | — | Kentucky |
| 2 | Homer L. Lupman | 62 | Son | — | Kentucky |
| 3 | Forest H. Cozad | 37 | Head | — | Ohio |
| 4 | Lucille M. Cozad | 36 | Wife | — | Ohio |
| 5 | Charlotte A. Cozad | 14 | Daughter | — | Ohio |
| 6 | Robert E. Cozad | 12 | Son | — | Ohio |
| 7 | Lester L. Taylor | 47 | Head | Truck Driver | Ohio |
| 8 | M. Ruth Taylor | 34 | Wife | Operator | Ohio |
| 9 | Jean Taylor | 15 | Daughter | — | Ohio |
| 10 | Marjorie R. Taylor | 13 | Daughter | — | Ohio |
| 11 | Henry Thomas | 50 | Head | Inspector | Kentucky |
| 12 | Lila Thomas | 48 | Wife | — | Ohio |
| 13 | Roy Thomas | 28 | Son | Assembler | Ohio |
| 14 | Ruth Thomas THIS PERSON | 25 | Daughter | Inspector | Ohio |
| 15 | Harry P. Gross | 49 | Head | Salesman | Ohio |
| 16 | Dora H. Gross | 45 | Wife | Saleslady | Ohio |
| 17 | Patricia L. Gross | 14 | Daughter | — | Ohio |
| 18 | Chester S. Paton | 33 | Lodger | Salesman | Ohio |
| 19 | John V. Frazer | 62 | Head | Millwright & Erector | Ohio |
| 20 | Emma Frazer | 64 | Wife | — | Ohio |
| 21 | Charles E. Jackson | 26 | Head | Salesman | Kentucky |
| 22 | Edith G. Jackson | 31 | Wife | — | Ohio |
| 23 | Barbara Jane Tallman | 11 | Sister in law | — | Ohio |
| 24 | Betty Joanne Vincent | 9 | Daughter in law | — | Ohio |
| 25 | John D. Vincent | 5 | Son in law | — | Ohio |
| 26 | Frank Kuhbander | 43 | Head | Inspector | Ohio |
| 27 | Stella M. Kuhbander | 41 | Wife | — | Ohio |
| 28 | Earl L. Kuhbander | 21 | Son | Meter Reader | Ohio |
| 29 | Marguerite Kuhbander | 19 | Daughter | New Worker | Ohio |
| 30 | Loftis H. Porter | 55 | Head | Salesman | Iowa |
| 31 | Carrie Anna Porter | 54 | Wife | — | Georgia |
| 32 | Joseph A. Beech | 65 | Head | Tool Maker | Pennsylvania |
| 33 | Ellen A. Beech | 60 | Wife | — | Pennsylvania |
| 34 | Lawrence J. Bell | 26 | Son in law | Magazine Clerk | Ohio |
| 35 | Dorothy E. Bell | 23 | Daughter | News Stand Clerk | Ohio |
| 36 | Edwin H. Ingle | 54 | Head | Plant Owner | Ohio |
| 37 | Goldie M. Ingle | 55 | Wife | — | Ohio |
| 38 | Dorothy Ingle | 22 | Daughter | Stenographer | Ohio |
| 39 | M. De Witt Showalter | 41 | Head | Accountant | Virginia |
| 40 | Mary E. Showalter | 36 | Wife | — | Ohio |
Pedigree Summary
Ruth + 1 sibling
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)