JH
John Hartman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Hartman across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1897), then head of a 8-person household.
Age 43
b. ~1897
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Hartman |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Wilkinsburg Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Machinist |
| Industry | Gear Works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3037 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Machinist |
| Township / Ward | Wilkinsburg Borough |
| Est. Birth Year | ~1897 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Hartman | Daughter | — | 13 | ~1927 |
| Marjorie Hartman | Daughter | — | 11 | ~1929 |
| Melissa Hartman | Daughter | — | 9 | ~1931 |
| N Hartman | Daughter | — | 16 | ~1924 |
| B Hartman | Daughter | — | 15 | ~1925 |
| John Hartman | Head | — | 43 | ~1897 |
| John Hartman | Son | — | 18 | ~1922 |
| Mary Hartman | Spouse | — | 40 | ~1900 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 22
Allegheny, Pennsylvania · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartmann |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | England |
| Occupation | Machinist |
| Industry | Gear Mfg. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Head, age 32
Allegheny, Pennsylvania · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | John P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 21 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Machinist |
| Industry | Manufacturing |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 40.00 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 43
Allegheny-County, Pennsylvania · implied b. ~1897 — 8 household members
| Surname | Hartman |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Wilkinsburg Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | Machinist |
| Industry | Gear Works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3037 |
| Highest Grade | 8 |
| 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 John Hartman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hartman
Head · 1940 · age 43 · b. ~1897 · 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 — 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-t0627-03421-00618)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | W. Roy Trussell | 50 | Head | Bookkeeper | Pennsylvania |
| 2 | Hannah M. Trussell | 50 | Wife | — | Pennsylvania |
| 3 | William Trussell | 18 | Son | — | Pennsylvania |
| 4 | Lorton Earl Yates | 46 | Head | Supt | Tennessee |
| 5 | Clara Mae Yates | 44 | Wife | Sales Lady | Indiana |
| 6 | Jacqueline Yates | 21 | Daughter | Sales Lady | Maryland |
| 7 | Sterling C. Yates | 14 | Son | — | Illinois |
| 8 | Charles C. Lewis | 45 | Head | Paperhanger | Georgia |
| 9 | Lillian Lewis | 46 | Wife | — | Georgia |
| 10 | C. C. Jr. Lewis | 19 | Son | — | Georgia |
| 11 | John P. Hartman THIS PERSON | 43 | Head | Machinist | Pennsylvania |
| 12 | Mary H. Hartman | 40 | Wife | — | Pennsylvania |
| 13 | John Phillip Hartman | 18 | Son | — | Pennsylvania |
| 14 | N. Suzanne Hartman | 16 | Daughter | — | Pennsylvania |
| 15 | B. Louise Hartman | 15 | Daughter | — | Pennsylvania |
| 16 | Mary Jean Hartman | 13 | Daughter | — | Pennsylvania |
| 17 | Marjorie Hartman | 11 | Daughter | — | Pennsylvania |
| 18 | Melissa Hartman | 9 | Daughter | — | Pennsylvania |
| 19 | Mary Fox | 42 | Head | — | Pennsylvania |
| 20 | — | None | — | — | — |
| 21 | — | None | — | — | — |
| 22 | — | None | — | — | — |
| 23 | Louis Wintermantel | 71 | Head | Retired Sales Mgr | New York |
| 24 | Mary E. Wintermantel | 69 | Wife | — | Pennsylvania |
| 25 | Mary Jane Maloney | 14 | Daughter | — | Michigan |
| 26 | Gregory Mastroine | 45 | Head | Wireman | Italy |
| 27 | Suzanne Mastroine | 35 | Wife | — | New York |
| 28 | Helen Elizabeth Mastroine | 18 | Daughter | — | Pennsylvania |
| 29 | Joseph Massaro | 63 | Head | Laborer | Italy |
| 30 | Thomasina Massaro | 57 | Wife | — | Italy |
| 31 | William Massaro | 32 | Son | Truck Driver | Pennsylvania |
| 32 | Arthur Massaro | 27 | Son | Production Clerk | Pennsylvania |
| 33 | Alfred Massaro | 20 | Son | — | Pennsylvania |
| 34 | Samuel Gordon | 35 | Head | Hod Carrier | Pennsylvania |
| 35 | Edith Gordon | 27 | Wife | — | Pennsylvania |
| 36 | Margaret Gordon | 13 | Daughter | — | Pennsylvania |
| 37 | James De Witt | 32 | Head | Paper Hanger | Maryland |
| 38 | Genevieve De Witt | 31 | Wife | — | Pennsylvania |
| 39 | Charles De Witt | 14 | Son | — | Pennsylvania |
| 40 | Eunice Mcsmith | 43 | Head | Seamstress | Pennsylvania |
Related Census Records
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)