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Robert Robertson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert Robertson across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Robertson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1924 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Anna Robertson | Daughter | — | 2 | ~1938 |
| Raymond Robertson | Son | — | 18 | ~1922 |
| Edward Robertson | Son | — | 12 | ~1928 |
| James Robertson | Head | — | 45 | ~1895 |
| Ruth Robertson | Daughter | — | 24 | ~1916 |
| Robert Robertson | Son | — | 16 | ~1924 |
| William Robertson | Son | — | 10 | ~1930 |
| Anna Robertson | Spouse | — | 45 | ~1895 |
| Margaret Robertson | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 6
Allegheny, Pennsylvania · implied b. ~1924 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 16
Allegheny-County, Pennsylvania · implied b. ~1924 — 9 household members
| Surname | Robertson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Class of Worker | 0 |
| Highest Grade | H-2 |
| 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 Robert Robertson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Robertson
Son · 1940 · age 16 · b. ~1924 · Pennsylvania
★ You are viewing this record
Sibling
Edward Robertson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Robertson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Robertson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Robertson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Robertson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Robertson
Sibling · 1940 · age 18
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-t0627-03672-00551)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leo F. Kellenbacher | 38 | Head | Salesman | Pennsylvania |
| 2 | Leona M. Kellenbacher | 32 | Wife | — | Pennsylvania |
| 3 | Robert L. Kellenbacher | 9 | Son | — | Pennsylvania |
| 4 | Ann M. Kellenbacher | 8 | Daughter | — | Pennsylvania |
| 5 | Louise Kraney | 53 | Head | — | Pennsylvania |
| 6 | George Spangler | 57 | Head | Laborer | Pennsylvania |
| 7 | John Novak | 56 | Head | Machinist | Austria |
| 8 | Margaret Novak | 31 | Daughter | — | Pennsylvania |
| 9 | Clement Novak | 20 | Son | New Worker | Pennsylvania |
| 10 | Anna M. Novak | 14 | Daughter | — | Pennsylvania |
| 11 | Edward Novak | 18 | Son | — | Pennsylvania |
| 12 | Brother Jacob | None | M | Building Const. | — |
| 13 | Daniel C. Monahan | 56 | Head | Night Officer | Pennsylvania |
| 14 | Frances Monahan | 53 | Wife | — | Pennsylvania |
| 15 | Russel H. Ehrenfeld | 25 | Head | Time Clerk | Pennsylvania |
| 16 | Jenny M. Ehrenfeld | 21 | Wife | — | Pennsylvania |
| 17 | Anthony Purer | 63 | Head | — | Italy |
| 18 | Lena Purer | 54 | Wife | — | Pennsylvania |
| 19 | Adolph Bittner | 61 | Head | — | Germany |
| 20 | Anna M. Bittner | 65 | Wife | — | Germany |
| 21 | Francis Ruel | 71 | Head | — | Germany |
| 22 | Isaac Myers | 23 | Son-in-law | — | Pennsylvania |
| 23 | Charles E. Morgan | 59 | Head | Machinist | Pennsylvania |
| 24 | Mary E. Morgan | 64 | Wife | — | Pennsylvania |
| 25 | Anna Schultz | 73 | Head | — | Pennsylvania |
| 26 | James E. Robertson | 45 | Head | Boiler Maker | Pennsylvania |
| 27 | Anna Robertson | 45 | Wife | — | Pennsylvania |
| 28 | Ruth E. Robertson | 24 | Daughter | Stenographer | Pennsylvania |
| 29 | Raymond Robertson | 18 | Son | — | Pennsylvania |
| 30 | Margaret Robertson | 18 | Daughter | — | Pennsylvania |
| 31 | Robert Robertson THIS PERSON | 16 | Son | — | Pennsylvania |
| 32 | Edward Robertson | 12 | Son | — | Pennsylvania |
| 33 | William Robertson | 10 | Son | — | Pennsylvania |
| 34 | Anna M. Robertson | 2 | Daughter | — | Pennsylvania |
| 35 | Frank Schmidt | 48 | Head | Manager | Hungary |
| 36 | Emma Schmidt | 43 | Wife | — | Hungary |
| 37 | Andrew Purpura | 63 | Head | — | Pennsylvania |
| 38 | Amandina Purpura | 65 | Wife | — | Ohio |
| 39 | Martin Thicker | 74 | Head | Watchman | Germany |
| 40 | Louise Thicker | 72 | Wife | — | Germany |
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)