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Thomas Welch — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Thomas Welch across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Edward & Alice — first a head (b.~1903), then head of a 3-person household.
Age 37
b. ~1903
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Welch |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Sheet Metal Worker |
| Industry | Sheet Metal Contractor |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1545 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Sheet Metal Worker |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1903 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Clarice Welch | Daughter | — | 13 | ~1927 |
| Clarice Welch | Spouse | — | 37 | ~1903 |
| Thomas Welch | Head | — | 37 | ~1903 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 17
Allegheny, Pennsylvania · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | England |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Apprentice |
| Industry | Sheet Metal |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1930
Allegheny, Pennsylvania
Head, age 27
Allegheny, Pennsylvania · implied b. ~1903 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1915 |
| Age at First Marriage | 23 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Metal Worker |
| Industry | Sheet Metal |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 35.00 |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Allegheny-County, Pennsylvania
Head, age 37
Allegheny-County, Pennsylvania · implied b. ~1903 — 3 household members
| Surname | Welch |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Occupation | Sheet Metal Worker |
| Industry | Sheet Metal Contractor |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1545 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Welch across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Welch (~0.92 confidence) and mother Alice Welch (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Welch
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Alice Welch
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Welch
Head · 1940 · age 37 · b. ~1903 · 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-t0627-03655-00962)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marvin Mays | 29 | Head | Repairman | Illinois |
| 2 | Catherine Mays | 29 | Wife | — | Penna |
| 3 | Elizabeth Ludgate | 67 | Mother-in-law | — | Canada |
| 4 | Gertrude Pettle | 40 | Head | Checker | Penna |
| 5 | Theodore Badger | 33 | Head | Truck Driver | Penna |
| 6 | Margaret Badger | 31 | Wife | — | Penna |
| 7 | Marjorie Badger | 5 | Daughter | — | Penna |
| 8 | Robert Badger | 3 | Son | — | Penna |
| 9 | Elizabeth Badger | 2 | Daughter | — | Penna |
| 10 | Elizabeth Milwohe | 71 | Head | — | Penna |
| 11 | Mary Milwohe | 68 | Sister | — | Penna |
| 12 | Frank Milwohe | 51 | Brother | Adjuster | Penna |
| 13 | James Shields | 45 | Lodger | Ins Agt | Penna |
| 14 | Frank Lunt | 58 | Head | Boiler Tender | Minnesota |
| 15 | Caroline Lunt | 45 | Wife | — | Penna |
| 16 | Charles Mccloy | 23 | Son | Truck Driver | Penna |
| 17 | Harry Mccloy | 21 | Son | Electrician | Penna |
| 18 | George Moore | 45 | Brother-in-law | Laborer | Penna |
| 19 | Mccullough | 61 | Lodger | Salesman | Penna |
| 20 | Mary Brophy | 56 | Head | Demonstrator | Canada |
| 21 | Donald Brophy | 22 | Son | Truck Driver | Penna |
| 22 | Thomas Brophy | 16 | Son | — | Penna |
| 23 | Fred Mcdonald | 36 | Head | Chauffer | Penna |
| 24 | Clara Mcdonald | 35 | Wife | — | Penna |
| 25 | Fred Mcdonald | 5 | Son | — | Penna |
| 26 | Phillip Mcdonald | 3 | Son | — | Penna |
| 27 | Louis Schiefer | 53 | Head | — | Penna |
| 28 | Charlotte Schiefer | 45 | Wife | — | Penna |
| 29 | Sally Jane Schiefer | 8 | Daughter | — | Penna |
| 30 | Charles Bunting | 34 | Head | Outside Salesman | Penna |
| 31 | Bertha Bunting | 29 | Wife | — | Indiana |
| 32 | Edwin Laughlin | 32 | Head | Machine Foreman | Minnesota |
| 33 | Rosemary Laughlin | 32 | Wife | — | Penna |
| 34 | Jas P Laughlin | 2 | Son | — | Penna |
| 35 | Catherine Doherty | 60 | Head | — | Penna |
| 36 | Chas Doherty | 28 | Son | 500 | New York |
| 37 | Phyllis Doherty | 16 | Daughter | — | Penna |
| 38 | Thomas Welch THIS PERSON | 37 | Head | Sheet Metal Worker | England |
| 39 | Clarice Welch | 37 | Wife | — | Mississippi |
| 40 | Clarice J Welch | 13 | Daughter | — | Penna |
Pedigree Summary
Thomas
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)