DT
Dorothy Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Dorothy Thomas across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Irvin & Zelda — first a spouse (b.~1913), then head of a 3-person household.
Age 27
b. ~1913
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Thomas |
| Given Name | Dorothy |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Alleg |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Penna |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Greentree Boro |
| Est. Birth Year | ~1913 |
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 Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Raymond Thomas | Head | — | 28 | ~1912 |
| Constance Thomas | Son | — | 2 | ~1938 |
| Dorothy Thomas | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 6
Allegheny, Pennsylvania · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Dorothy J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 16
Allegheny, Pennsylvania · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| 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
Spouse, age 27
Allegheny-County, Pennsylvania · implied b. ~1913 — 3 household members
| Surname | Thomas |
| Given Name | Dorothy |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Alleg |
| Highest Grade | H 4 |
| 1935 Residence | Penna |
| 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 Dorothy Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Irvin Thomas (~0.92 confidence) and mother Zelda Thomas (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Irvin Thomas
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Zelda Thomas
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Thomas
Spouse · 1940 · age 27 · b. ~1913 · Pennsylvania
★ 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 — 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-t0627-03404-00778)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Herman Schafer | 19 | Son | Clerk | Pennsylvania |
| 2 | Choral Schafer | 16 | Daughter | — | Pennsylvania |
| 3 | Wm P Robley | 53 | Lodger | Check Up | Pennsylvania |
| 4 | Bertha Wettling | 58 | Head | — | Pennsylvania |
| 5 | Albert Wettling | 29 | Son | Bricklayer | Pennsylvania |
| 6 | Russel Wettling | 24 | Son | Time Keeper | Pennsylvania |
| 7 | Ralph G Crawford | 44 | Head | Carpenter | Pennsylvania |
| 8 | Violet Crawford | 39 | Wife | — | Pennsylvania |
| 9 | Thomas Crawford | 18 | Son | — | Pennsylvania |
| 10 | Frank B Smith | 72 | Head | Engineer | Pennsylvania |
| 11 | Ida M Smith | 71 | Wife | — | Pennsylvania |
| 12 | Elizabeth Smith | 29 | Daughter | Stenographer | Pennsylvania |
| 13 | James L Wallace | 33 | Son in law | Laborer | Pennsylvania |
| 14 | Kathryn Wallace | 32 | Daughter | — | Pennsylvania |
| 15 | Nancy Wallace | 4 | Grand daughter | — | Pennsylvania |
| 16 | Paul H Weatherspoon | 51 | Head | Oil & Gas Producer | N Carolina |
| 17 | Helen R Weatherspoon | 49 | Wife | — | Missouri |
| 18 | Paul A Weatherspoon | 21 | Son | — | Pennsylvania |
| 19 | Casper Paul | 73 | Head | Farmer | Germany |
| 20 | Sophia Paul | 64 | Wife | — | Pennsylvania |
| 21 | Author Paul | 27 | Son | Helper | Pennsylvania |
| 22 | Estella Paul | 19 | Daughter | — | Pennsylvania |
| 23 | Raymond Thomas | 28 | Head | Appliance Salesman | Pennsylvania |
| 24 | Dorothy Thomas THIS PERSON | 27 | Wife | — | Pennsylvania |
| 25 | Constance Thomas | 2 | Son | — | Pennsylvania |
| 26 | Herbert Paul | 39 | Head | Milk Express | Pennsylvania |
| 27 | Wilma Paul | 36 | Wife | — | Pennsylvania |
| 28 | Herbert Jr Paul | 11 | Son | — | Pennsylvania |
| 29 | Wilma Paul | 9 | Daughter | — | Pennsylvania |
| 30 | James Paul | 6 | Son | — | Pennsylvania |
| 31 | Richard Paul | 5 | Son | — | Pennsylvania |
| 32 | Paul Howard | 35 | Head | Manager | Pennsylvania |
| 33 | Margaret Howard | 32 | Wife | — | Pennsylvania |
| 34 | Howard Wm Howard | 7 | Son | — | Pennsylvania |
| 35 | David A Howard | 6 | Son | — | Pennsylvania |
| 36 | Ronald E Howard | 4 | Son | — | Pennsylvania |
| 37 | Gerald H Howard | 2 | Son | — | Pennsylvania |
| 38 | Wayne A Howard | 1 | Son | — | Pennsylvania |
| 39 | Francis Anton | 43 | Head | Attorney | Pennsylvania |
| 40 | Roberta Anton | 37 | Wife | — | Pennsylvania |
Pedigree Summary
Dorothy
Gen 1 · 2 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)