RH
Robert Hamilton — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cambria-County, Pennsylvania
Our Model Tree links this Robert Hamilton across the 1920, 1930 and 1940 US Censuses in Cambria-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Emil & Lillian — first a son (b.~1913), then head of a 3-person household.
Age 27
b. ~1913
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cambria-County, Pennsylvania |
| Surname | HAMILTON |
| Given Name | Robert S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Johnstown City |
| 1935 Residence (County) | Cambria |
| Additional Details | |
| Occupation | Observer |
| Industry | Steel Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Observer |
| Township / Ward | Johnstown City |
| Est. Birth Year | ~1913 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Emil Hamilton | Head | — | 57 | ~1883 |
| Robert Hamilton | Son | — | 27 | ~1913 |
| Lillian Hamilton | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Cambria, Pennsylvania
Son, age 7
Cambria, Pennsylvania · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Cambria, Pennsylvania
Son, age 17
Cambria, Pennsylvania · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Robert G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Apprentice |
| Industry | Steel Corp |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Cambria-County, Pennsylvania
Son, age 27
Cambria-County, Pennsylvania · implied b. ~1913 — 3 household members
| Surname | HAMILTON |
| Given Name | Robert S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Johnstown City |
| 1935 Residence (County) | Cambria |
| Occupation | Observer |
| Industry | Steel Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H-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 Robert Hamilton across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Emil Hamilton (~0.92 confidence) and mother Lillian Hamilton (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Emil Hamilton
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Lillian Hamilton
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Hamilton
Son · 1940 · age 27 · b. ~1913 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cambria-County, Pennsylvania
Open full size
1940 US Federal Census — Cambria-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03454-00526)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John A Mchugh | 57 | HEAD | Salesman | Pennsylvania |
| 2 | Blanche Mchugh | 52 | WIFE | — | Pennsylvania |
| 3 | Thomas H Chappell | 44 | HEAD | Salesman | Pennsylvania |
| 4 | Nancy S Chappell | 42 | WIFE | — | Pennsylvania |
| 5 | Suzanne Chappell | 12 | daughter | — | Maryland |
| 6 | Chester Gordes | 48 | HEAD | Operator | New Jersey |
| 7 | Hilda Jo Gordes | 47 | WIFE | — | Pennsylvania |
| 8 | Shirley L Gordes | 20 | daughter | — | Pennsylvania |
| 9 | Henry J Bischof | 57 | HEAD | Sign Writer | Pennsylvania |
| 10 | Lillian L Bischof | 47 | WIFE | — | Pennsylvania |
| 11 | William J Horn | 38 | HEAD | Laborer | Pennsylvania |
| 12 | Eleanor V Horn | 38 | Wife | — | Pennsylvania |
| 13 | Martha Fink | 55 | Lodger | Stenographer | Pennsylvania |
| 14 | Emil Hamilton | 57 | HEAD | Tax Collector | Pennsylvania |
| 15 | Lillian Hamilton | 52 | Wife | — | Pennsylvania |
| 16 | Robert S Hamilton THIS PERSON | 27 | Son | Observer | Pennsylvania |
| 17 | Augusta D Murphy | 49 | HEAD | — | Pennsylvania |
| 18 | James Murphy | 23 | Son | Laborer | Pennsylvania |
| 19 | Thomas Murphy | 21 | Son | Clerk | Pennsylvania |
| 20 | Charles Gundlach | 78 | FATHER | Janitor | Pennsylvania |
| 21 | Josephine Gundlach | 75 | MOTHER | — | New York |
| 22 | Peter S Hetzley | 45 | HEAD | Draftsman | Pennsylvania |
| 23 | Leona Hetzley | 39 | WIFE | — | Pennsylvania |
| 24 | Patricia Hetzley | 6 | daughter | — | Pennsylvania |
| 25 | Robert Hetzley | 2 | son | — | Pennsylvania |
| 26 | Hubert T Myers | 62 | HEAD | Superintendent | Pennsylvania |
| 27 | Myrtle Myers | 60 | Wife | — | Pennsylvania |
| 28 | Helen Myers | 32 | daughter | Secretary | Pennsylvania |
| 29 | Robert C Myers | 28 | SON | Salesman | Pennsylvania |
| 30 | Stanley Gundlach | 51 | HEAD | Laborer | New York |
| 31 | Virginia Gundlach | 52 | WIFE | — | Pennsylvania |
| 32 | Paul Gundlach | 22 | Son | Laborer | Pennsylvania |
| 33 | Jack Gundlach | 16 | Son | — | Pennsylvania |
| 34 | Robert W Gundlach | 12 | SON | — | Pennsylvania |
| 35 | Charles Mulvehill | 46 | HEAD | Clerk | Pennsylvania |
| 36 | Vernal Mulvehill | 40 | WIFE | — | Maryland |
| 37 | Rosemary Mulvehill | 13 | daughter | — | Pennsylvania |
| 38 | Eileen Mulvehill | 11 | daughter | — | Pennsylvania |
| 39 | Charles Mulvehill | 10 | son | — | Pennsylvania |
| 40 | Frances Mulvehill | 9 | daughter | — | Pennsylvania |
Pedigree Summary
Robert
Gen 1 · 2 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)