TS
Thomas Shea — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Thomas Shea across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & Anna — first a son (b.~1900), then head of a 4-person household.
Age 40
b. ~1900
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Shea |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1900 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Jack Ziffle | Son | — | 12 | ~1928 |
| Mary Ziffle | Daughter | — | 37 | ~1903 |
| Anna Shea | Head | — | 73 | ~1867 |
| Thomas Shea | Son | — | 40 | ~1900 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 20
Allegheny, Pennsylvania · implied b. ~1900 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shea |
| Given Name | Thomas L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 30
Allegheny, Pennsylvania · implied b. ~1900 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shea |
| Given Name | Thomas C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Steel mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 40
Allegheny-County, Pennsylvania · implied b. ~1900 — 4 household members
| Surname | Shea |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 8 |
| 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 Thomas Shea across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Shea (~0.92 confidence) and mother Anna Shea (~0.92 confidence) and mother Annie Shea (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Shea
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Anna Shea
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Annie Shea
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Shea
Son · 1940 · age 40 · b. ~1900 · Pennsylvania
★ You are viewing this record
Sibling
Mary Ziffle
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Ziffle
Sibling · 1940 · age 12
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-t0627-03666-00026)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mildred Janowey | 18 | Daughter | Waitress | Pennsylvania |
| 42 | Samuel Loree | 51 | Head | Fireman | Italy |
| 43 | Blanche Loree | 45 | Wife | — | Pennsylvania |
| 44 | Rita Loree | 5 | Daughter | — | Pennsylvania |
| 45 | Mary Peacock | 80 | Head | — | Pennsylvania |
| 46 | Geraldine Beech | 27 | Niece | — | Pennsylvania |
| 47 | Frank Infil | 49 | Head | Laborer | Pennsylvania |
| 48 | Stanley Infil | 36 | Brother | Baker'S Helper | Pennsylvania |
| 49 | Stella Infil | 32 | Sister | Packer | Pennsylvania |
| 50 | Agnes Infil | 27 | Sister | — | Pennsylvania |
| 51 | Frank Brown | 37 | Head | Laborer | Pennsylvania |
| 52 | Louise Brown | 36 | Wife | — | Pennsylvania |
| 53 | Richard Brown | 4 | Son | — | Pennsylvania |
| 54 | Ursula Bonzak | 56 | Head | — | Poland |
| 55 | Julia Bonzak | 32 | Daughter | Waitress | Pennsylvania |
| 56 | John Kirby | 34 | Head | Fireman | Pennsylvania |
| 57 | Gertrude Kirby | 32 | Wife | — | Pennsylvania |
| 58 | John Kirby | 13 | Son | — | Pennsylvania |
| 59 | Ellen Kirby | 11 | Daughter | — | Pennsylvania |
| 60 | Robert Kirby | 9 | Son | — | Pennsylvania |
| 61 | Michael Kiefer | 63 | Head | Laborer | Germany |
| 62 | Rose Kiefer | 49 | Wife | — | Pennsylvania |
| 63 | Dorothy Schumitz | 23 | Daughter | Salesgirl | Pennsylvania |
| 64 | Walter Schumitz | 21 | Son | Millmaker | Pennsylvania |
| 65 | Montgomery Phair | 31 | Head | Stereotyping | Pennsylvania |
| 66 | Hilda Phair | 25 | Wife | — | Pennsylvania |
| 67 | Montgomery Phair | 6 | Son | — | Pennsylvania |
| 68 | Beverly Phair | 4 | Daughter | — | Pennsylvania |
| 69 | George Govic | 38 | Head | Butcher | Pennsylvania |
| 70 | Mary Govic | 38 | Wife | — | New York |
| 71 | Anna Shea | 73 | Head | — | Ireland |
| 72 | Thomas Shea THIS PERSON | 40 | Son | — | Pennsylvania |
| 73 | Mary Ziffle | 37 | Daughter | Elevator Operator | Pennsylvania |
| 74 | Jack Ziffle | 12 | Son | — | Pennsylvania |
| 75 | Paul L. Mclaughlin | 38 | Head | Fireman | Pennsylvania |
| 76 | Kathryn Mclaughlin | 30 | Wife | — | Pennsylvania |
| 77 | Nancy Mclaughlin | 7 | Daughter | — | Pennsylvania |
| 78 | Janet C. Mclaughlin | 3 | Daughter | — | Pennsylvania |
| 79 | Renatha Nicholas | 63 | Head | — | Pennsylvania |
| 80 | Mary Nicholas | 88 | Mother | — | Pennsylvania |
Pedigree Summary
Thomas + 2 siblings
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)