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John Roth — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Roth across the 1910, 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 4-person household.
Age 63
b. ~1877
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Roth |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Tract 253 |
| 1935 Residence (County) | Bluffton |
| Additional Details | |
| Occupation | Engineer |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 222 |
| Highest Grade | No 7 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Engineer |
| Township / Ward | Tract 253 |
| Est. Birth Year | ~1877 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Roth | Head | — | 63 | ~1877 |
| John Shaffer | Other | — | 21 | ~1919 |
| Bertha Roth | Spouse | — | 63 | ~1877 |
| William Roth | Son | — | 24 | ~1916 |
Census Appearances
1910
Allegheny, Pennsylvania
Head, age 32
Allegheny, Pennsylvania · implied b. ~1878 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roth |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Indiana |
| Years Married | 8 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Engineer |
| Industry | Locomotive |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1920
Allegheny, Pennsylvania
Head, age 42
Allegheny, Pennsylvania · implied b. ~1878 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roth |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Engineer |
| Industry | Locomotive |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Allegheny, Pennsylvania
Head, age 52
Allegheny, Pennsylvania · implied b. ~1878 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roth |
| Given Name | John M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 24 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Engineer |
| Industry | Rail Road |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 8000 |
| Radio Set | R |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Allegheny-County, Pennsylvania
Head, age 63
Allegheny-County, Pennsylvania · implied b. ~1877 — 4 household members
| Surname | Roth |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Tract 253 |
| 1935 Residence (County) | Bluffton |
| Occupation | Engineer |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 222 |
| Highest Grade | No 7 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 John Roth across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Roth
Head · 1940 · age 63 · b. ~1877 · Pennsylvania
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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-t0627-03418-00379)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | J. Bruce Dower | 61 | Head | Labor | Pennsylvania |
| 42 | Frank Isalovic | 32 | Head | Riveter | Pennsylvania |
| 43 | Nellie Isalovic | 32 | Wife | — | Pennsylvania |
| 44 | Dolores Isalovic | 8 | Daughter | — | Pennsylvania |
| 45 | Walter Deitrick | 51 | Head | Labor | Pennsylvania |
| 46 | Myrtle Deitrick | 52 | Wife | — | Pennsylvania |
| 47 | Don Walter | 30 | Son | Attorney | Pennsylvania |
| 48 | Ruth Walter | 25 | Daughter | Psychologist | Pennsylvania |
| 49 | Helen Walter | 23 | Daughter | College | Pennsylvania |
| 50 | Frank Killinpark | 43 | Head | Electrician | Austria |
| 51 | Lillian Killinpark | 51 | Wife | — | Pennsylvania |
| 52 | John Christiansen | 20 | Head | Draftsman | Pennsylvania |
| 53 | Althea Christiansen | 20 | Wife | — | Pennsylvania |
| 54 | Joseph Selzer | 48 | Head | Machinist | Pennsylvania |
| 55 | Alice Selzer | 44 | Wife | — | Ohio |
| 56 | Harry Gillespi | 44 | Head | Engineer | Pennsylvania |
| 57 | Lorraine Gillespi | 47 | Wife | — | Pennsylvania |
| 58 | Frank Watkins | 66 | Head | Police Pension | Ohio |
| 59 | Amory Watkins | 61 | Wife | — | England |
| 60 | Charles Watkins | 24 | Son | Labor | Pennsylvania |
| 61 | Clyde Watkins | 26 | Son | Packer | Pennsylvania |
| 62 | Eleanor Watkins | 27 | Daughter | Worker | Pennsylvania |
| 63 | Frank Inebert | 24 | Nephew | Gasoline | Pennsylvania |
| 64 | Margaret Inebert | 22 | Daughter | — | Pennsylvania |
| 65 | John Roth THIS PERSON | 63 | Head | Engineer | Indiana |
| 66 | Bertha Roth | 63 | Wife | — | Pennsylvania |
| 67 | William Roth | 24 | Son | Auto Mech | Pennsylvania |
| 68 | John Shaffer | 21 | Son-in-law | — | Pennsylvania |
| 69 | Joseph Lyhowski | 53 | Head | Car Repair | Poland |
| 70 | Victoria Lyhowski | 44 | Wife | — | Pennsylvania |
| 71 | Bernard Lyhowski | 22 | Son | — | Pennsylvania |
| 72 | Harry Irwin | 50 | Head | Clerk Retail | Pennsylvania |
| 73 | Nellie Irwin | 50 | Wife | — | Pennsylvania |
| 74 | Warren Irwin | 19 | Son | College | Pennsylvania |
| 75 | John Reynolds | 38 | Lodger | School Teacher | Pennsylvania |
| 76 | — | None | — | — | — |
| 77 | Elmer Yoter | 40 | Head | Labor | Pennsylvania |
| 78 | Agnes Yoter | 31 | Wife | — | Pennsylvania |
| 79 | Lorraine Yoter | 16 | Daughter | — | Pennsylvania |
| 80 | Robert Simpson | 53 | Brother-in-law | Meat Butcher | 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)