TR
Thomas Robertson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Thomas Robertson across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1907), then head of a 6-person household.
Age 33
b. ~1907
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Robertson |
| Given Name | Thomas |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Refiner |
| Industry | Refinery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Refiner |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1907 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| John Robertson | Head | — | 75 | ~1865 |
| Robert Robertson | Son | — | 30 | ~1910 |
| James Robertson | Son | — | 49 | ~1891 |
| Thomas Robertson | Son | — | 33 | ~1907 |
| William Robertson | Son | — | 42 | ~1898 |
| Catherine Robertson | Spouse | — | 73 | ~1867 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age 24
Philadelphia, Pennsylvania · implied b. ~1906 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | North Ireland |
| Mother's Birthplace | North Ireland |
| Occupation | Mechanic |
| Industry | Pipe Fitting |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Son, age 33
Philadelphia-County, Pennsylvania · implied b. ~1907 — 6 household members
| Surname | Robertson |
| Given Name | Thomas |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Occupation | Refiner |
| Industry | Refinery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | No 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 Thomas Robertson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thomas Robertson
Son · 1940 · age 33 · b. ~1907 · Pennsylvania
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Sibling
Robert Robertson
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Robertson
Sibling · 1940 · age 42
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Robertson
Sibling · 1940 · age 49
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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03751-00141)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Reddy | 49 | cousin | Laborer | Ireland |
| 2 | William Mc Ginley | 48 | head | Bartender | Ireland |
| 3 | Katherine Mc Ginley | 45 | wife | — | Ireland |
| 4 | Nicola Dellas | 56 | head | Laborer | Italy |
| 5 | Carmela Dellas | 53 | wife | — | Italy |
| 6 | Joseph Dellas | 19 | son | Auto-Mechanic | Pennsylvania |
| 7 | Elizabeth Dellas | 16 | daughter | — | Pennsylvania |
| 8 | Thomas Dellas | 14 | son | — | Pennsylvania |
| 9 | Gloria Dellas | 10 | daughter | — | Pennsylvania |
| 10 | Francis Donnelly | 49 | head | Dentist | Pennsylvania |
| 11 | Sophie Donnelly | 43 | wife | — | Pennsylvania |
| 12 | Mary Jane Donnelly | 18 | daughter | — | Pennsylvania |
| 13 | Francis Donnelly | 16 | son | — | Pennsylvania |
| 14 | Joseph Donnelly | 14 | son | — | Pennsylvania |
| 15 | John Robertson | 75 | head | — | Ireland |
| 16 | Catherine Robertson | 73 | wife | — | Ireland |
| 17 | James Robertson | 49 | son | — | Pennsylvania |
| 18 | William Robertson | 42 | son | Laboring | Pennsylvania |
| 19 | Thomas Robertson THIS PERSON | 33 | son | Refiner | Pennsylvania |
| 20 | Robert Robertson | 30 | son | Clerk | Pennsylvania |
| 21 | Bernard Dougherty | 65 | head | Laborer | Ireland |
| 22 | Margaret Dougherty | 74 | house-keeper | Housekeeper | Ireland |
| 23 | Mary Dougherty | 32 | house-keeper | House Maid | Ireland |
| 24 | Samuel Di More | 74 | head | — | Italy |
| 25 | Sarah Di More | 64 | wife | — | Italy |
| 26 | Tony Di More | 25 | son | Truck Driver | Pennsylvania |
| 27 | Louis Wulle | 40 | head | Insulator | Pennsylvania |
| 28 | Mary Wulle | 39 | wife | — | Pennsylvania |
| 29 | Marie Wulle | 15 | daughter | — | Pennsylvania |
| 30 | Patrick Nihill | 77 | head | — | Ireland |
| 31 | Catherine Nihill | 74 | wife | — | Ireland |
| 32 | James Nihill | 37 | son | Salesman | Pennsylvania |
| 33 | Margaret Nihill | 31 | daughter-in-law | — | Pennsylvania |
| 34 | Margaret M. Nihill | 1 | grand-child | — | Pennsylvania |
| 35 | John F. Mc Devitt | 52 | head | Cutter | Pennsylvania |
| 36 | Sadie Mc Devitt | 42 | wife | — | Pennsylvania |
| 37 | John F. Jr. Mc Devitt | 21 | son | General-Helper | Pennsylvania |
| 38 | Sadie Mc Devitt | 19 | daughter | New Worker | Pennsylvania |
| 39 | Margaret Mc Devitt | 17 | daughter | — | Pennsylvania |
| 40 | Joseph Mc Devitt | 15 | 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)