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Thomas Robertson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Thomas Robertson across the 1930 and 1940 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 7-person household.
Age 9
b. ~1921
Male
Son
Born: Penna
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | Robertson |
| Given Name | Thomas J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Penna |
| Additional Details | |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
| Township / Ward | Philadelphia 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 1930 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Helen Robertson | Spouse | — | 28 | ~1902 |
| Thomas Robertson | Son | — | 9 | ~1921 |
| Helen Robertson | Daughter | — | 7 | ~1923 |
| Kathlyn Robertson | Daughter | — | 3 | ~1927 |
| John Robertson | Head | — | 30 | ~1900 |
| John Robertson | Son | — | 10 | ~1920 |
| Mary Robertson | Daughter | — | 5 | ~1925 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age 9
Philadelphia, Pennsylvania · implied b. ~1921 — 7 household members
| Surname | Robertson |
| Given Name | Thomas J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Penna |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1940
Delaware-County, Pennsylvania
Son, age 19
Delaware-County, Pennsylvania · implied b. ~1921 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roberts |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Penna |
| 1935 Residence (City) | U. Darby |
| 1935 Residence (County) | Delaware |
| Occupation | Attendant |
| Industry | Gas Station |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 880 |
| Highest Grade | Hs 4 |
| 1935 Residence | Penna |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
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 · 1930 · age 9 · b. ~1921 · Pennsylvania
★ You are viewing this record
Sibling
Kathlyn Robertson
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Robertson
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Robertson
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Robertson
Sibling · 1930 · age 5
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
1930 US Federal Census — Philadelphia, Pennsylvania
Open full size
1930 US Federal Census — Philadelphia, Pennsylvania
Page Contents
49 people indexed on this census page (ia:1930:fifteenthcensus00reel2135:0184)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Andrew J Westrich | 55 | Head | Foreman | Penna |
| 2 | Effie Westrich | 49 | Wife | — | Penna |
| 3 | Mildred Westrich | 21 | Daughter | Stenographer | Penna |
| 4 | Helen Westrich | 18 | Daughter | — | Penna |
| 5 | Mary Westrich | 14 | Daughter | — | Penna |
| 6 | Nola Westrich | 10 | Daughter | — | Penna |
| 7 | Evelyn Westrich | 6 | Daughter | — | Michigan |
| 8 | Frank Jr Mahoney | 30 | Head | Mechanic | New Jersey |
| 9 | Emma Mahoney | 31 | Wife | — | Penna |
| 10 | Franklin Mahoney | 8 | Son | — | Penna |
| 11 | Wayne Mahoney | 1 | Son | — | Penna |
| 12 | Joan Mahoney | 0 | Daughter | — | Penna |
| 13 | Charles Muncher | 32 | Head | Manager | Penna |
| 14 | Elizabeth Muncher | 32 | Wife | — | Penna |
| 15 | Charles Jr Muncher | 5 | Son | — | Penna |
| 16 | John E Kestenmacher | 41 | Head | Teacher | Penna |
| 17 | Marie Kestenmacher | 37 | Wife | — | Penna |
| 18 | Marie Kestenmacher | 8 | Daughter | — | Penna |
| 19 | John Kestenmacher | 5 | Son | — | Penna |
| 20 | George W Bergey | 57 | Head | Foreman | Penna |
| 21 | Ada S Bergey | 56 | Wife | — | Penna |
| 22 | Harry S. Weber | 48 | Head | Foreman | Penna |
| 23 | Clara C. Weber | 48 | Wife | — | Penna |
| 24 | Harry V. Weber | 19 | Son | Salesman | Penna |
| 25 | Adelheid Schmider | 74 | Mother-in-law | — | Germany |
| 26 | Elizabeth Gallagher | 64 | Head | — | Penna |
| 27 | Mary Gallagher | 25 | Daughter | Stenographer | Delaware |
| 28 | Edwin Gallagher | 23 | Son | Mechanic | Delaware |
| 29 | Joseph Gallagher | 21 | Son | Salesman | Penna |
| 30 | Colmer M Zwing | 51 | Head | Salesman | Penna |
| 31 | Adelaide Zwing | 49 | Wife | — | Penna |
| 32 | Elymer J Zwing | 10 | Son | — | Penna |
| 33 | Thomas W Bowie | 42 | Head | Steamfitter | Penna |
| 34 | Margaret Bowie | 35 | Wife | Book Keeper | Penna |
| 35 | Thomas W Jr Bowie | 5 | Son | — | Penna |
| 36 | Benjamin F Ballantine | 50 | Head | Superintendent | Penna |
| 37 | Elizabeth Ballantine | 48 | Wife | — | Penna |
| 38 | Margaret Ballantine | 27 | Daughter | Book Keeper | Penna |
| 39 | Sarah Ballantine | 20 | Daughter | Book-Keeper | Penna |
| 40 | Robert Ballantine | 18 | Son | Teller | Penna |
| 41 | Elizabeth Ballantine | 12 | Daughter | — | Penna |
| 42 | Mary Ballantine | 10 | Daughter | — | Penna |
| 43 | John Robertson | 30 | Head | Meat Cutter | Scotland |
| 44 | Helen Robertson | 28 | Wife | — | Penna |
| 45 | John L Robertson | 10 | Son | — | Penna |
| 46 | Thomas J Robertson THIS PERSON | 9 | Son | — | Penna |
| 47 | Helen Robertson | 7 | Daughter | — | Penna |
| 48 | Mary E. Robertson | 5 | Daughter | — | Penna |
| 49 | Kathlyn G. Robertson | 3 | Daughter | — | Penna |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)