JH
John Hartman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Brown-County, South Dakota
Our Model Tree links this John Hartman across the 1930 and 1940 US Censuses in Brown-County, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 9-person household.
Age 55
b. ~1885
Male
Head
Born: Russia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Brown-County, South Dakota |
| Surname | Hartman |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Aberdeen |
| 1935 Residence (County) | Brown |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Painter |
| Industry | Building |
| Class of Worker | GW |
| Hours Worked | 21 |
| Income (1939) | 546 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
| Occupation | Painter |
| Township / Ward | Aberdeen |
| Est. Birth Year | ~1885 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Veronica Hartman | Daughter | — | 26 | ~1914 |
| John Hartman | Head | — | 55 | ~1885 |
| Joseph Hartman | Son | — | 33 | ~1907 |
| John Hartman | Son | — | 22 | ~1918 |
| James Hartman | Son | — | 17 | ~1923 |
| Frank Hartman | Son | — | 20 | ~1920 |
| Martin Hartman | Son | — | 28 | ~1912 |
| Walter Hartman | Son | — | 24 | ~1916 |
| Barbara Hartman | Spouse | — | 57 | ~1883 |
Census Appearances
1930
Brown, South …
Head, age 46
Brown, South Dakota · implied b. ~1884 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 21 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Printer |
| Industry | Self Home |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Veteran | No |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
1940
Brown-County, South …
Head, age 55
Brown-County, South Dakota · implied b. ~1885 — 9 household members
| Surname | Hartman |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Aberdeen |
| 1935 Residence (County) | Brown |
| Naturalization Status | First papers filed |
| Occupation | Painter |
| Industry | Building |
| Class of Worker | GW |
| Hours Worked | 21 |
| Income (1939) | 546 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Hartman
Head · 1940 · age 55 · b. ~1885 · South Dakota
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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 — Brown-County, South Dakota
Open full size
1940 US Federal Census — Brown-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03849-00111)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Donald Schile | 4 | son | — | South Dakota |
| 42 | Vincent D Mulligan | 52 | Head | Laborer | South Dakota |
| 43 | Rozella Mulligan | 28 | wife | Seamstress | Minnesota |
| 44 | James Mulligan | 21 | son | Farm Help | South Dakota |
| 45 | Etta Mulligan | 19 | daughter | — | South Dakota |
| 46 | Paul Mulligan | 8 | son | — | South Dakota |
| 47 | Ross Mulligan | 7 | son | — | South Dakota |
| 48 | Robert Mulligan | 4 | son | — | South Dakota |
| 49 | Byron Severts | 42 | Head | Assistant Foreman | Nebraska |
| 50 | Mary D Severts | 37 | wife | — | Iowa |
| 51 | John S. Stanger | 49 | Head | Street Sweeper | Russia |
| 52 | Elizabeth Stanger | 45 | wife | — | Russia |
| 53 | Joseph Stanger | 22 | son | General Help | South Dakota |
| 54 | Jacob Stanger | 19 | son | Pressman | South Dakota |
| 55 | Rose Mary Stanger | 17 | daughter | — | South Dakota |
| 56 | Agnes Stanger | 15 | daughter | — | South Dakota |
| 57 | Philip Schumacher | 26 | Head | Automobile Repair | North Dakota |
| 58 | Eva Schumacher | 24 | wife | — | North Dakota |
| 59 | Everett Schumacher | 2 | son | — | South Dakota |
| 60 | Anna Gange | 26 | Lodger | Private Home | North Dakota |
| 61 | Anton J Vasell | 44 | Head | Passenger Brakeman | South Dakota |
| 62 | Hilda Vasell | 33 | wife | Manager | South Dakota |
| 63 | Marie Vasell | 15 | daughter | — | South Dakota |
| 64 | Andrew J Nikolas | 53 | Head | Laborer | Russia |
| 65 | Magadena Nikolas | 47 | wife | — | Russia |
| 66 | Philimina Nikolas | 24 | daughter | Bar Maid | South Dakota |
| 67 | Elizabeth Nikolas | 22 | daughter | Dish Washer | South Dakota |
| 68 | Joseph Nikolas | 18 | son | Trucker | South Dakota |
| 69 | George Nikolas | 17 | son | — | South Dakota |
| 70 | Frances Nikolas | 9 | daughter | — | South Dakota |
| 71 | John P. Hartman THIS PERSON | 55 | Head | Painter | Russia |
| 72 | Barbara Hartman | 57 | wife | Painter | Russia |
| 73 | Joseph W. Hartman | 33 | son | — | South Dakota |
| 74 | Martin Hartman | 28 | son | Painter Help | South Dakota |
| 75 | Veronica Hartman | 26 | daughter | Housework | South Dakota |
| 76 | Walter Hartman | 24 | son | Laborer | South Dakota |
| 77 | John N Hartman | 22 | son | Laborer | South Dakota |
| 78 | Frank Hartman | 20 | son | Common Laborer | South Dakota |
| 79 | James Hartman | 17 | son | — | South Dakota |
| 80 | Louis Keller | 39 | Head | — | South Dakota |
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)