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Robert Hill — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert Hill across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Mary & Robert — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Hill |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Dormont Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Installer |
| Industry | Electric |
| Class of Worker | PW |
| Income (1939) | 240 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Installer |
| Township / Ward | Dormont Borough |
| Est. Birth Year | ~1919 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Mary Hill | Head | — | 69 | ~1871 |
| Mary Hill | Other | — | 7 | ~1933 |
| Mary Hill | Other | — | 28 | ~1912 |
| Charles Hill | Son | — | 34 | ~1906 |
| Edward Hill | Son | — | 30 | ~1910 |
| Robert Hill | Son | — | 21 | ~1919 |
| William Hill | Son | — | 31 | ~1909 |
Census Appearances
1920
Allegheny, Pennsylvania
Other, age 2
Allegheny, Pennsylvania · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hill |
| Given Name | Robert W. |
| Relationship to Head | Nephew |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 12
Allegheny, Pennsylvania · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hill |
| Given Name | Robert W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| 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 21
Allegheny-County, Pennsylvania · implied b. ~1919 — 7 household members
| Surname | Hill |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Dormont Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | Installer |
| Industry | Electric |
| Class of Worker | PW |
| Income (1939) | 240 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Hill across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Hill (~0.92 confidence) and father Robert Hill (~0.92 confidence) and mother Yulca Hill (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Hill
b. ~1871
Source mother
● Household
· direct · ~0.92
Father
Robert Hill
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Yulca Hill
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Hill
Son · 1940 · age 21 · b. ~1919 · Pennsylvania
★ You are viewing this record
Sibling
Edward Hill
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Hill
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Hill
Sibling · 1940 · age 31
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
39 people indexed on this census page (nara:1940:m-t0627-03401-00765)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | C. Don William | 2 | Head | — | Pennsylvania |
| 2 | Daniel J. Delaney | 66 | Head | — | Pennsylvania |
| 3 | Katie Delaney | 62 | Wife | — | Pennsylvania |
| 4 | John H. Blythe | 38 | Head | Salesman | Pennsylvania |
| 5 | Ellamae R. Blythe | 33 | Wife | — | Pennsylvania |
| 6 | Ella L. Blythe | 7 | Daughter | — | Pennsylvania |
| 7 | Florence M. Blythe | 5 | Daughter | — | Pennsylvania |
| 8 | Edward Canaga | 29 | Head | Salesman | Ohio |
| 9 | Anna M. Canaga | 29 | Wife | — | Pennsylvania |
| 10 | Nancy A. Canaga | 0 | Daughter | — | Pennsylvania |
| 11 | Edgar E. Dick | 67 | Head | Bookkeeper | Pennsylvania |
| 12 | Kathryn E. Dick | 55 | Wife | — | New York |
| 13 | Dorothy A. Dick | 27 | Daughter | Stenographer | Pennsylvania |
| 14 | R. Mauer Nothnold | 27 | Head | Salesman | Pennsylvania |
| 15 | Harriett Nothnold | 29 | Wife | — | Pennsylvania |
| 16 | Morris Berman | 30 | Head | Photographer | West Virginia |
| 17 | Ruth Berman | 32 | Wife | — | West Virginia |
| 18 | Phillip H. Rosette | 30 | Head | Field Representative | Pennsylvania |
| 19 | Rosemary C. Rosette | 23 | Wife | — | Illinois |
| 20 | David J. Rosette | 0 | Son | — | Pennsylvania |
| 21 | John H. Pepper | 35 | Head | Electrician | Pennsylvania |
| 22 | Elizabeth M. Pepper | 39 | Wife | — | Pennsylvania |
| 23 | William J. Pepper | 10 | Son | — | Pennsylvania |
| 24 | Mary P. Hill | 69 | Head | — | Northumberland |
| 25 | William J. Hill | 31 | Son | Truck Driver | Pennsylvania |
| 26 | Edward J. Hill | 30 | Son | Inspector | Pennsylvania |
| 27 | Robert J. Hill THIS PERSON | 21 | Son | Installer | Pennsylvania |
| 28 | Charles J. Hill | 34 | Son | Truck Driver | Pennsylvania |
| 29 | Mary Ellen Hill | 28 | Daughter in law | — | Pennsylvania |
| 30 | Mary Ann Hill | 7 | Grand daughter | — | Pennsylvania |
| 31 | Thomas E. Ross | 56 | Head | Superintendent | West Virginia |
| 32 | Jettie A. Ross | 45 | Wife | — | West Virginia |
| 33 | Steele Thomas Ross | 13 | Nephew | — | West Virginia |
| 34 | John H. Clayton | 35 | Head | Letter Carrier | Pennsylvania |
| 35 | Iona Lee Clayton | 5 | Daughter | — | Ohio |
| 36 | William J. Bahmer | 55 | Father in law | Tax Assessor | Pennsylvania |
| 37 | Ruth B. Campbell | 32 | Housekeeper | Housekeeper | Pennsylvania |
| 38 | Kathryn M. Krogher | 54 | Head | Clerk | Pennsylvania |
| 39 | Catherine D. Krogher | 24 | Daughter | Clerk | Pennsylvania |
Related Census Records
Pedigree Summary
Robert + 3 siblings
Gen 1 · 3 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)