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Thomas Robertson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Thomas Robertson across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1905), then head of a 7-person household.
Age 35
b. ~1905
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Robertson |
| Given Name | Thomas C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | McDonald |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Cutter |
| Industry | Coal Mine |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Cutter |
| Township / Ward | Mcdonald |
| Est. Birth Year | ~1905 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Robertson | Head | — | 35 | ~1905 |
| Harry Robertson | Son | — | 5 | ~1935 |
| William Robertson | Son | — | 10 | ~1930 |
| John Robertson | Son | — | 2 | ~1938 |
| Mary Robertson | Daughter | — | 8 | ~1932 |
| Mary Robertson | Spouse | — | 33 | ~1907 |
| Leslie Robertson | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Allegheny, Pennsylvania
Head, age 25
Allegheny, Pennsylvania · implied b. ~1905 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | Thomas C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1907 |
| Age at First Marriage | 21 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Home Value / Rent | 800 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Allegheny-County, Pennsylvania
Head, age 35
Allegheny-County, Pennsylvania · implied b. ~1905 — 7 household members
| Surname | Robertson |
| Given Name | Thomas C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | McDonald |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Occupation | Cutter |
| Industry | Coal Mine |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Robertson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thomas Robertson
Head · 1940 · age 35 · b. ~1905 · Pennsylvania
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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-t0627-03407-00412)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Moore | 12 | Son | — | Pennsylvania |
| 42 | Lois Moore | 9 | Daughter | — | Pennsylvania |
| 43 | Leona Moore | 4 | Daughter | — | Pennsylvania |
| 44 | Robert Moore | 2 | Son | — | Pennsylvania |
| 45 | Abel Moore | 1 | Son | — | Pennsylvania |
| 46 | Thomas C. Robertson THIS PERSON | 35 | Head | Cutter | Scotland |
| 47 | Mary Robertson | 33 | Wife | — | Pennsylvania |
| 48 | William Robertson | 10 | Son | — | Pennsylvania |
| 49 | Mary Robertson | 8 | Daughter | — | Pennsylvania |
| 50 | Leslie Robertson | 7 | Daughter | — | Pennsylvania |
| 51 | Harry Robertson | 5 | Son | — | Pennsylvania |
| 52 | John Robertson | 2 | Son | — | Pennsylvania |
| 53 | Lou Stewart | 73 | Head | — | Pennsylvania |
| 54 | Mary Stewart | 66 | Wife | — | Scotland |
| 55 | Marie Stewart | 35 | Daughter | Clerical | Pennsylvania |
| 56 | Stanley Masik | 50 | Head | Loader | Poland |
| 57 | Jennie Masik | 39 | Wife | — | Poland |
| 58 | Stella Masik | 17 | Daughter | — | Pennsylvania |
| 59 | Chester Masik | 15 | Son | — | Pennsylvania |
| 60 | Julia Masik | 13 | Daughter | — | W. Virginia |
| 61 | Helen Masik | 11 | Daughter | — | W. Virginia |
| 62 | Stephen Masik | 9 | Son | — | Pennsylvania |
| 63 | Virginia Masik | 6 | Daughter | — | Pennsylvania |
| 64 | Christine Masik | 5 | Daughter | — | Pennsylvania |
| 65 | Frank Pierson | 39 | Head | Track Layer | Pennsylvania |
| 66 | Mary Pierson | 38 | Wife | — | Pennsylvania |
| 67 | Frank Pierson | 13 | Son | — | Pennsylvania |
| 68 | Joseph Pierson | 10 | Son | — | Pennsylvania |
| 69 | Julia Barat | 60 | Head | — | France |
| 70 | John Sanders | 33 | Head | Laborer | Ohio |
| 71 | Martha Sanders | 30 | Wife | — | Pennsylvania |
| 72 | Martha M. Sanders | 2 | Daughter | — | Pennsylvania |
| 73 | Macel Mikas | 55 | Head | Loader | Poland |
| 74 | Mary Mikas | 43 | Wife | — | Poland |
| 75 | John Mikas | 21 | Son | Loader | Pennsylvania |
| 76 | Stanley Mikas | 17 | Son | — | Pennsylvania |
| 77 | Stella Mikas | 10 | Daughter | — | Pennsylvania |
| 78 | James Robson | 50 | Head | Loader | Pennsylvania |
| 79 | Elmer Robson | 47 | Wife | — | Pennsylvania |
| 80 | Robert Robson | 19 | Son | — | Pennsylvania |
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)