BT
Betty Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Betty Thomas across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Charles & Grand — first a daughter (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Thomas |
| Given Name | Betty M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Secretary |
| Industry | Retail Store |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 250 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Secretary |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1920 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| James Thomas | Son | — | 9 | ~1931 |
| Elizabeth Thomas | Spouse | — | 44 | ~1896 |
| Grand Thomas | Head | — | 53 | ~1887 |
| Betty Thomas | Daughter | — | 20 | ~1920 |
| Edward Thomas | Son | — | 17 | ~1923 |
| Eunice Thomas | Daughter | — | 18 | ~1922 |
| Dorothy Thomas | Daughter | — | 12 | ~1928 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age
Allegheny, Pennsylvania · implied b. ~1920 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Bettie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 11
Allegheny, Pennsylvania · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Betty C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 20
Allegheny-County, Pennsylvania · implied b. ~1920 — 7 household members
| Surname | Thomas |
| Given Name | Betty M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | Secretary |
| Industry | Retail Store |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 250 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Betty Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Thomas (~0.92 confidence) and father Grand Thomas (~0.92 confidence) and mother Elizabeth Thomas (~0.92 confidence) and father Thomas Thomas (~0.92 confidence) and mother Elizabeth Thomas (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Thomas
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Grand Thomas
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Thomas
b. ~1896
Source mother
● Household
· direct · ~0.92
Father
Thomas Thomas
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Thomas
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Betty Thomas
Daughter · 1940 · age 20 · b. ~1920 · Pennsylvania
★ You are viewing this record
Sibling
Dorothy Thomas
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eunice Thomas
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Thomas
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Thomas
Sibling · 1940 · age 17
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03677-00284)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elsie Skelton | 46 | Wife | — | Pennsylvania |
| 42 | Thomas Skelton | 25 | Son | Steel Worker | Pennsylvania |
| 43 | Harriet Skelton | 21 | Daughter | Secretary | Pennsylvania |
| 44 | John H. Holzer | 43 | Head | Laborer | Pennsylvania |
| 45 | Katherine S. Holzer | 38 | Wife | — | Pennsylvania |
| 46 | Edward S. Holzer | 15 | Son | — | Pennsylvania |
| 47 | Ruth M. Holzer | 11 | Daughter | — | Pennsylvania |
| 48 | Elinor A. Holzer | 7 | Daughter | — | Pennsylvania |
| 49 | Dorothy L. Holzer | 5 | Daughter | — | Pennsylvania |
| 50 | Joe Lutz | 45 | Nephew | — | Pennsylvania |
| 51 | Leroy Bateman | 44 | Head | Rigger | Pennsylvania |
| 52 | Ruth E. D. Bateman | 37 | Wife | — | Pennsylvania |
| 53 | Thomas E. Bateman | 14 | Son | — | Pennsylvania |
| 54 | Richard L. Bateman | 13 | Son | — | Pennsylvania |
| 55 | Anna E. Garforth | 72 | Mother-in-law | — | Pennsylvania |
| 56 | Grand Thomas | 53 | Head | Roll Turner | Pennsylvania |
| 57 | Elizabeth D. Thomas | 44 | Wife | — | Pennsylvania |
| 58 | Betty M. Thomas THIS PERSON | 20 | Daughter | Secretary | Pennsylvania |
| 59 | Eunice L. Thomas | 18 | Daughter | Sales Girl | Pennsylvania |
| 60 | Edward J. Thomas | 17 | Son | — | Pennsylvania |
| 61 | Dorothy E. Thomas | 12 | Daughter | — | Pennsylvania |
| 62 | James R. Thomas | 9 | Son | — | Pennsylvania |
| 63 | Oliver J. G. Scandrol | 38 | Head | Laborer | Pennsylvania |
| 64 | Wife Margaret Scandrol | 29 | Wife | — | Pennsylvania |
| 65 | Elroy Scandrol | 11 | Son | — | Pennsylvania |
| 66 | Wallace Swisher | 46 | Head | Machinist | Pennsylvania |
| 67 | Elizabeth Q. Swisher | 43 | Wife | — | Pennsylvania |
| 68 | Clifford S. Swisher | 22 | Son | Machinist | Pennsylvania |
| 69 | Donald Swisher | 17 | Son | — | Pennsylvania |
| 70 | Shirley A. Swisher | 5 | Daughter | — | Pennsylvania |
| 71 | Steve Vatoyla | 47 | Head | Truck Driver | Pennsylvania |
| 72 | Jennie D. Vatoyla | 47 | Wife | — | Pennsylvania |
| 73 | Hazel Vatoyla | 21 | Daughter | — | Pennsylvania |
| 74 | Patrick Vatoyla | 22 | Son | — | Pennsylvania |
| 75 | Theresa Vatoyla | 29 | Daughter | — | Pennsylvania |
| 76 | Todd Arance Vatoyla | 1 | Grandson | — | Pennsylvania |
| 77 | James Walker | 56 | Head | Crane Man | Pennsylvania |
| 78 | Lucy M. D. Walker | 45 | Wife | — | Pennsylvania |
| 79 | James H. Walker | 20 | Son | Laborer | Pennsylvania |
| 80 | Clarence Walker | 19 | Son | — | Pennsylvania |
Pedigree Summary
Betty + 4 siblings
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)