IT
Irene Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Irene Thomas across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Arthur & Irene — first a daughter (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Thomas |
| Given Name | Irene |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | McKeesport City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Clerk |
| Industry | Tin Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 740 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| Township / Ward | Mckeesport City |
| Est. Birth Year | ~1921 |
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 Irene | Age | Birth yr |
|---|---|---|---|---|
| Regina Thomas | Daughter | — | 21 | ~1919 |
| Edward Thomas | Son | — | 18 | ~1922 |
| Herbert Thomas | Son | — | 13 | ~1927 |
| Michael Thomas | Head | — | 44 | ~1896 |
| Leonard Thomas | Son | — | 15 | ~1925 |
| Irene Thomas | Daughter | — | 19 | ~1921 |
| Mary Thomas | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 1
Allegheny, Pennsylvania · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Irene |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| 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 10
Allegheny, Pennsylvania · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Irene |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| 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 19
Allegheny-County, Pennsylvania · implied b. ~1921 — 7 household members
| Surname | Thomas |
| Given Name | Irene |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | McKeesport City |
| 1935 Residence (County) | Allegheny |
| Occupation | Clerk |
| Industry | Tin Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 740 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| 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 Irene Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Thomas (~0.92 confidence) and mother Irene Thomas (~0.92 confidence) and father Michael Thomas (~0.92 confidence) and mother Mary Thomas (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Thomas
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Irene Thomas
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Michael Thomas
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Mary Thomas
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Irene Thomas
Daughter · 1940 · age 19 · b. ~1921 · Pennsylvania
★ You are viewing this record
Sibling
Regina Thomas
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Thomas
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Thomas
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herbert Thomas
Sibling · 1940 · age 13
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-t0627-03409-00850)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles Jr. Davis | 37 | Head | Shipper | Pennsylvania |
| 42 | Madeline Davis | 34 | Wife | — | Pennsylvania |
| 43 | Gordon Davis | 14 | Son | — | Pennsylvania |
| 44 | Glenn Davis | 12 | Son | — | Pennsylvania |
| 45 | Joseph W. Goethe | 38 | Head | Clerk | Pennsylvania |
| 46 | Esther B. Goethe | 36 | Wife | — | Pennsylvania |
| 47 | John C. Smith | 40 | Head | Clerk | Pennsylvania |
| 48 | Rosa G. Smith | 40 | Wife | — | Virginia |
| 49 | David Smith | 11 | Son | — | Pennsylvania |
| 50 | Frank J. Jr. Zacharias | 23 | Head | Labor | Pennsylvania |
| 51 | Georgia Zacharias | 23 | Wife | — | Pennsylvania |
| 52 | Jackie Zacharias | 1 | Son | — | Pennsylvania |
| 53 | Ewald Carlson | 56 | Head | Carpenter | Sweden |
| 54 | Anna Q. Carlson | 50 | Wife | — | Sweden |
| 55 | Anna K. Carlson | 15 | Daughter | — | Pennsylvania |
| 56 | Elda M. Carlson | 14 | Daughter | — | Pennsylvania |
| 57 | Bill Carlson | 10 | Son | — | Pennsylvania |
| 58 | Ruth E. Carlson | 8 | Daughter | — | Pennsylvania |
| 59 | Alice L. Carlson | 6 | Daughter | — | Pennsylvania |
| 60 | Gus Sr. Edler | 49 | Head | Clerk | Ohio |
| 61 | Genevieve Edler | 42 | Wife | — | West Virginia |
| 62 | James C. Edler | 14 | Son | — | West Virginia |
| 63 | Richard S. Edler | 14 | Son | — | Ohio |
| 64 | William J. Edler | 14 | Son | — | Ohio |
| 65 | Clara J. Edler | 22 | Daughter | — | Ohio |
| 66 | Gus Jr. Edler | 24 | Son | — | West Virginia |
| 67 | Bronwyn Edler | 24 | Daughter | — | West Virginia |
| 68 | Donald Edler | 1 | Son | — | Ohio |
| 69 | Michael Thomas | 44 | Head | Foreman | Pennsylvania |
| 70 | Mary Thomas | 42 | Wife | — | Pennsylvania |
| 71 | Regina Thomas | 21 | Daughter | Telephone Operator | Pennsylvania |
| 72 | Irene Thomas THIS PERSON | 19 | Daughter | Clerk | Pennsylvania |
| 73 | Edward Thomas | 18 | Son | Tester | Pennsylvania |
| 74 | Leonard Thomas | 15 | Son | — | Pennsylvania |
| 75 | Herbert Thomas | 13 | Son | — | Pennsylvania |
| 76 | Robert Snelling | 51 | Head | Attorney | Pennsylvania |
| 77 | Elizabeth B. Snelling | 46 | Wife | Beautician | Pennsylvania |
| 78 | Gilbert Snelling | 25 | Son | Clerk | Pennsylvania |
| 79 | Jack Snelling | 23 | Son | Clerk | Pennsylvania |
| 80 | Alberta Snelling | 19 | Daughter | Student Nurse | Pennsylvania |
Related Census Records
Pedigree Summary
Irene + 4 siblings
Gen 1 · 4 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)