JH
John Hartman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cattaraugus-County, New York
Our Model Tree links this John Hartman across the 1920, 1930 and 1940 US Censuses in Cattaraugus-County, New York (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 4-person household.
Age 52
b. ~1888
Male
Head
Born: Switzerland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cattaraugus-County, New York |
| Surname | Hartman |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Switzerland |
| 1935 Residence (City) | Salamanca |
| 1935 Residence (County) | Cattaraugus |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Locomotive Engineer |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 2580 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth Country | Switzerland |
| Birthplace (normalized) | switzerland |
| Occupation | Locomotive Engineer |
| Township / Ward | Salamanca |
| Est. Birth Year | ~1888 |
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 |
|---|---|---|---|---|
| Mary Hartman | Daughter | — | 21 | ~1919 |
| Betty Hartman | Daughter | — | 18 | ~1922 |
| John Hartman | Head | — | 52 | ~1888 |
| Henrietta Hartman | Spouse | — | 44 | ~1896 |
Census Appearances
1920
None, None
Head, age 31
None, None · implied b. ~1889 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | John W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Switzerland |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Switzerland |
| Mother's Birthplace | Switzerland |
| Occupation | Fireman |
| Industry | Locomotive |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Birth Country | Switzerland |
| Year of Naturalization | 1897 |
| Birthplace (normalized) | switzerland |
1930
Cattaraugus, New …
Head, age 42
Cattaraugus, New York · implied b. ~1888 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Switzerland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1889 |
| Age at First Marriage | 20 |
| Father's Birthplace | Switzerland |
| Mother's Birthplace | Switzerland |
| Occupation | Fireman |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | WW |
| Home Value / Rent | R |
| Veteran | Yes |
| Birth Country | Switzerland |
| Birthplace (normalized) | switzerland |
1940
Cattaraugus-County, New …
Head, age 52
Cattaraugus-County, New York · implied b. ~1888 — 4 household members
| Surname | Hartman |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Switzerland |
| 1935 Residence (City) | Salamanca |
| 1935 Residence (County) | Cattaraugus |
| Naturalization Status | Naturalized |
| Occupation | Locomotive Engineer |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 2580 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth Country | Switzerland |
| Birthplace (normalized) | switzerland |
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 Hartman across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
John Hartman
Head · 1940 · age 52 · b. ~1888 · New York
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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 — Cattaraugus-County, New York
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1940 US Federal Census — Cattaraugus-County, New York
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02506-00908)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Duane Rockwell | 16 | Son | 0 | New York |
| 2 | Norma Rockwell | 13 | Daughter | — | New York |
| 3 | Raymond Rockwell | 10 | Son | — | New York |
| 4 | Horace G. Cox | 68 | Head | Foreman | Pennsylvania |
| 5 | Ida L. Cox | 59 | Wife | — | Canada |
| 6 | Daniel A. Studley | 49 | Head | Car Inspector | New York |
| 7 | Ethel G. Studley | 44 | Wife | — | New York |
| 8 | Betty M. Studley | 20 | Daughter | Typist | New York |
| 9 | Arthur D. Jackson | 65 | Head | — | Pennsylvania |
| 10 | Ina M. Jackson | 52 | Wife | — | New York |
| 11 | William G. Jackson | 19 | Son | New Worker | New York |
| 12 | Howard E. Jackson | 14 | Son | — | New York |
| 13 | John Owens | 54 | Head | Brakeman | New York |
| 14 | Nora P. Owens | 51 | Wife | — | New York |
| 15 | Clifford Owens | 22 | Son | Truck Driver | New York |
| 16 | Paul Owens | 16 | Son | — | New York |
| 17 | Margaret Owens | 12 | Daughter | — | New York |
| 18 | John P. Hartman THIS PERSON | 52 | Head | Locomotive Engineer | Switzerland |
| 19 | Henrietta Hartman | 44 | Wife | — | New York |
| 20 | Mary Hartman | 21 | Daughter | — | New York |
| 21 | Betty Hartman | 18 | Daughter | New Worker | New York |
| 23 | Francis U. Warters | 70 | Head | — | New York |
| 24 | Florence G. Warters | 51 | Wife | — | New York |
| 25 | Kenneth Warters | 30 | Son | Mechanic County Shop | New York |
| 26 | Leonard P. Morton | 38 | Head | Brakeman | New York |
| 27 | Grace Morton | 34 | Wife | — | Pennsylvania |
| 28 | Betty L. Morton | 12 | Daughter | — | New York |
| 29 | Calvin Morton | 8 | Son | — | New York |
| 30 | Nellie P. Griner | 42 | Head | — | New York |
| 31 | La Verne Edmunds | 35 | Head | Equipment Operator | New York |
| 32 | Catherine Edmunds | 36 | Wife | — | New York |
| 33 | Arthur F. Burlew | 51 | Head | Electrician | Ohio |
| 34 | Anna M. Burlew | 48 | Wife | — | Kentucky |
| 35 | Arthur Jr. Burlew | 21 | Son | Salesclerk | New York |
| 36 | Mildred L. Burlew | 16 | Daughter | — | New York |
| 37 | William G. Burlew | 12 | Son | — | New York |
| 38 | Donald H. Andrews | 43 | Head | Civil Engineer | New York |
| 39 | Emily M. Andrews | 37 | Wife | — | Pennsylvania |
| 40 | Guy W. Keeler | 45 | Head | Office Manager | 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)